28.07.2021

200 Cybersecurity Influencers On Twitter Making a Difference in 2021

28.07.2021

We’ve compiled the largest list of cybersecurity influencers on Twitter to date. 200 amazing and inspiring people that are making the interconnected world a safer place. The list includes hackers, journalists, founders, service providers, and industry thought leaders from all across the globe.    

The order of influencers was randomized, provided each influencer met our criteria of having a Social Authority score of 35 or above using a tool called Followerwonk from Moz. 

We’ve also included links to all of the influencer’s Twitter profiles, so make sure you follow them to stay up-to-date on the latest news and insights in the world of cybersecurity.

To all the others who didn’t make the list (too many to name), don’t worry, we still think you’re awesome too!  

See who made the list below. 

In memory of Dan Kaminsky

“Friend of freedom and embodiment of the true hacker spirit.” – Electronic Frontier Foundation

February 7, 1979 – April 23, 2021

1. Katie Moussouris

About: Katie Moussouris is a cybersecurity research specialist and pioneer of the bug bounty program at Microsoft and the U.S. Department of Defense’s first bug bounty program for hackers. Katie brings over 20 years of experience and is one of the most sought-after industry thought leaders in cyber defense. She is currently the founder and CEO of Luta Security which utilizes its Vulnerability Coordination Maturity Model (VCMM) and bug bounties to help secure governments and organizations.

Social Authority Score: 76

2. Brian Krebs

About: When a malicious software program locked Brian Krebs out of his computer in 2001, he decided to learn as much as he could about computer and Internet security and would go on to become a renowned investigative journalist on the topic of cybersecurity. KrebsOnSecurity.com is the go-to source for all cybercrime today.

Social Authority Score: 77

3. Kevin Mitnick

About: Long before Kevin Mitnick became a trusted cybersecurity source and legend in the industry, he made the FBI’s most-wanted list as one of the most prolific cyber hackers in history. His creative hacking abilities would reshape the way law enforcement viewed cybercrimes. Mitnick is now a trusted security consultant to Fortune 500 companies and the Chief Hacking Officer of KnowBe4, a global leader on security awareness training.

Social Authority Score: 66

4. Marcus Hutchins

About: Marcus Hutchins AKA MalwareTech is a British-born computer security researcher and malware analyst known for temporarily stopping the WannaCry ransomware attack and for his role in the controversial Kronos malware scandal leading to his arrest in 2017. Hutchins gave his side of the story in a featured Wired article piece titled “The Confessions of Marcus Hutchins, the Hacker Who Saved the Internet”.

Social Authority Score: 81

5. Christopher Krebs

About: Christopher Krebs holds the privilege of serving as the first Director of the Cybersecurity and Infrastructure Security Agency (CISA) in the United States Depart of Homeland Security from November 2018 to November 2020 before his departure. Krebs is a frequent keynote speaker at major cybersecurity events such as RSA Conference, Cybersummit, and at the SANS Cyber Threat Intelligence Summit.

Social Authority Score: 87

6. Mikko Hypponen

About: Mikko Hyppönen is one of the most recognizable names in the cyber industry. He is the Chief Research Officer at F-Secure, a global security solution leader. Mikko has appeared on countless cybersecurity panels, TED Talks, and was selected among the 50 most important people on the web by the PC World magazine.

Social Authority Score: 88

7. Troy Hunt

About: Troy Hunt is one of the most sought-after thought leaders and security professionals across the globe. He is the creator of Have I Been Pwned? (https://haveibeenpwned.com/) which is a site that checks if your email address or password has been compromised and how to remediate the threat. Hunt is also a Microsoft MVP and Regional Director and has authored many security courses on the highly popular education company, Pluralsight.

Social Authority Score: 86

8. Marcus Carey

About: Marcus J. Carey is the creator of Tribe of Hackers, a best-selling cybersecurity book series and cybersecurity advocate with over 25 years of experience protecting government data and keeping the Internet safe. Carey began his career in the U.S. Navy as a cryptographer and remains a regular name at major security conferences around the globe today.

Social Authority Score: 79

9. SwiftOnSecurity

About: If you’re looking for news on the latest exploits and other major cyber hacks, SwiftOnSecurity is your go-to source on Twitter. With over 330k followers, SwiftOnSecurity is one of the most followed cybersecurity professionals without an actual identity behind the scenes. What is known about SwiftOnSecurity is that SwiftOnSecurity is a Microsoft MVP and author of Decent Security which helps break down common security threats.

Social Authority Score: 86

10. Graham Cluley

About: Graham Cluley is one of the most recognizable faces in the cybersecurity world. The British-born security blogger got his start back in the 1990s as a computer programmer and in 2011 was inducted into the Infosecurity Europe Hall of Face. He is the host of the widely popular @SmashinSecurity(add link) podcast and award-winning computer security blog, Naked Security.

Social Authority Score: 73

11. Eugene Kaspersky

About: Eugene Kaspersky is one of the most well-known figures in the cybersecurity field. in 1989 when his computer was infected with the ‘Cascade’ virus. Kaspersky then developed a removal tool for the virus and eventually would go on to create the AVP Toolkit Pro antivirus program. Over 400 million users worldwide rely on Kaspersky Lab products to keep their computers safe today.

Social Authority Score: 66

12. Bruce Schneier

About: Simply referred to as a “security guru” by The Economist, Bruce Schneier is one of the most influential cybersecurity figures around. Schneier has authored multiple best-selling books including Data and Goliath and Click Here to Kill Everybody. Schneier on Security provides a ton of valuable resources and is a must-read for anyone looking to learn more about the topic of security.

Social Authority Score: 62

13. Eva Galperin

About: Eva had developed a love for computers at an early age and has been a major contributing figure on malware research and free speech. Galperin is currently the Director of Cybersecurity at the Electronic Frontier Foundation (EFF) and technical advisor for the Freedom of the Press Foundation. Prior to EFF, Eva had been working in various security and admin roles throughout Silicon Valley.

Social Authority Score: 82

14. Lesley Carhart

About: Lesley Carhart is a Principal Industrial Incident Responder at Dragos, an industrial (OT/ICS/IIoT) cybersecurity company, and is a recognized expert in the field of cybersecurity incident response and digital forensics. In addition to her vast knowledge on the subject of digital forensics, Lesley also holds many prestigious accolades including DEF CON Hacker of the Year and has been named a “Top Woman in Cybersecurity” from CyberScoop.

Social Authority Score: 84

15. Shira Rubinoff

About: No stranger to top cybersecurity lists. Shira Rubinoff is a very well-recognized name in cybersecurity and a Blockchain expert and advisor. She is widely considered as one of the top cybersecurity influencers out there with an extremely impressive resume. Shira is often a keynote speaker at major security conferences and events around the world. She has received countless honors for her contributions including a Woman of Influence award by CSO Magazine and named one of New Jersey’s Best 50 Women in Business.

Social Authority Score: 71

16. Ryan Goodman

About: With over 145k Twitter followers alone, Ryan Goodman is by far, one of the most recognized cybersecurity influencers in the industry. Ryan is a South-African-born Anne and Joel Ehrenkranz Professor of Law at New York University School of Law and is the founding co-editor-in-chief of its website Just Security.

Social Authority Score: 83

17. Daniel Miessler

About: Daniel Miessler has amassed quite an impressive resume. With over 2,500 essays, posts, tutorials, articles, and other types of content, Daniel Miessler certainly has a lot to talk about in the world of cybersecurity. Miessler also hosts a popular podcast that covers all aspects of security. The San Franciso born security expert began his digital footprint back in 1999 and has since become a leading voice in the industry.

Social Authority Score: 71

18. Maria Markstedter

About: Maria Markstedter is CEO and founder of Azeria Labs which focuses on the exploitation of ARM-based devices with free ARM Assembly tutorials and workshops and other helpful materials on the subject matter. She holds a Bachelor’s in IT Security and is an authority on penetration testing and was listed as one of the Forbes 30 Under 30 in the technology Europe division in 2018.

Social Authority Score: 77

19. Matthew Green

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About: Matthew Green is a highly renowned cryptographer and professor at Johns Hopkins University. Green specializes in the area of applied cryptography and has one of the best blogs around on the subject. He covers the latest Attacks of the Week and has written a library of Conference Papers throughout major publications on security issues.

Social Authority Score: 80

20. Dr. Magda Chelly

About: Dr. Magda Chelly, CISSP, Ph.D. is one of the most influential women in cybersecurity and the founder of the Women of Security Chapter (WoSEC). Her extensive research and writings have been featured by IEEE, RSA Conference, CYBERSEC, and the World Congress on Internet Security. She has also appeared on numerous globally televised interviews discussing the importance of security.

Social Authority Score: 68

21. Robert Herjavec

About: You’ve seen Robert Herjavec help aspiring entrepreneurs live their dreams on ABC’s Emmy-Award-winning hit show Shark Tank, but Robert is also one of the biggest influencers and names in the cybersecurity world. Robert is the Founder and CEO of Herjavec Group which is a global leader in cybersecurity operations. He has served as a Cybersecurity Advisor for the Government of Canada, participated in the White House Summit on Cybersecurity, and is a member of the US Chamber of Commerce Task Force for Cybersecurity. Robert is also a race car enthusiast and has competed in the Ferrari Challenge North America Series.

Social Authority Score: 68

22. Binni Shah

About: Binni Shah is a Linux Evangelist and security enthusiast. She regularly Tweets about helpful tutorials and guides on security. She also loves coffee and Jain food.

Social Authority Score: 72

23. Matthew Hickey

About: Matthew Hickey is CTO and Co-Founder of Hacker House, which offers Hands-On Hacking training and services for companies and individuals. Hickey is also the author of Hands on Hacking: Become an Expert at Next Gen Penetration Testing and Purple Teaming and is a big fan of the outdoors.

Social Authority Score: 80

24. Kevin Beaumont

About: Kevin Beaumont is a Senior Threat Intelligence Analyst at Microsoft and one of the most followed cybersecurity experts on Twitter. His highly informative blog DoublePulsar covers the latest cybersecurity news and ransomware threats.

Social Authority Score: 77

25. Asher Wolf

About: Asher Wolf is an Australian-based transparency and information activist and founder of the Cryptoparty. She talks about being a target of an FBI investigation targeting Wikileaks supporters worldwide. Asher has worked with Open Australia and leads campaigns aiming to reform debt creation and automated data-matching practices by the government.

Social Authority Score: 84

26. Dave Kennedy

About: Dave Kennedy is the Founder of TrustedSec and one of the biggest influencers in the cybersecurity field. David has had the privilege of speaking at some of the nation’s largest conferences, including Microsoft’s BlueHat, DEF CON, Black Hat, and DerbyCon, which he co-created in 2011. He also served as Technical Consultant for the critically acclaimed Mr. Robot TV show.

Social Authority Score: 73

27. Kevin L. Jackson

About: Kevin L. Jackson is a globally recognized cloud computing expert, thought leader, and founder of the GovCloud Network. Jackson graduated from the United States Naval Academy in 1979 with a BS in Aerospace Engineering, later receiving an MSEE in Computer Engineering from the Navy Postgraduate School. Jackson has been recognized as a “Top 100 Cybersecurity Influencer and Brand” by Onalytica and a Top 50 Cloud Computing Blogger for IT Integrators” by CRN.

Social Authority Score: 64

28. thaddeus e. grugq

About: Known only as thaddeus e. grugq, this famously anonymous cybersecurity influencer has managed to amass over 116k Twitter followers while keeping an active blog. His work has been quoted and referenced in The New York Times, Washington Post, Vice, and Wired. His use of memes is legendary as well.

Social Authority Score: 80

29. Jeff Moss

About: Jeff Moss AKA Dark Tangent is a renowned hacker and Internet security expert. Moss began his cyber journey at the age of 10 when he received his first computer and would go on to become the founder of Black Hat and DEF CON. He was appointed ICANN Chief Security Officer in 2011 and has served on countless panels and speaking engagements worldwide.

Social Authority Score: 72

30. Alex Stamos

About: Alex Stamos is an adjunct professor at Stanford University’s Center for International Security and Cooperation, and was the former CSO at Facebook. Stamos co-founded iSEC Partners in 2004 and was well known for his research publications on vulnerabilities in forensics software. Stamos attended the University of California, Berkeley, where he graduated in 2001 with a degree in EECS.

Social Authority Score: 72

31. Richard Stiennon

About: Richard Stiennon is one of the most followed thought leaders in cybersecurity. Stiennon’s extensive career in cybersecurity spans several decades. He began in 1995 as one of the first MSSPs at Netrex, eventually becoming VP Research at Gartner and authoring several books in the process. Stiennon published several books including UP and to the Right: Strategy and Tactics of Analyst Influence and Curmudgeon: How to Succeed as an Industry Analyst.

Social Authority Score: 48

32. Eric Geller

About: Eric Geller is a cybersecurity reporter at Politico where he covers federal cyber policy, election security, global malware outbreaks, and other cyber incidents. He also writes about cyber policy developments at the White House and the Department of Homeland Security.

Social Authority Score: 74

33. hasherezade (Aleksandra Doniec)

About: Aleksandra Doniec, who goes by the username “hasherezade” is a Polish-based malware analyst and software engineer. She has a very large following on Twitter and has even created some open-source tools.

Social Authority Score: 80

34. Dr. Anton Chuvakin

About: Dr. Anton Chuvakin is a Russian-born computer security specialist and physicist. He is a recognized security expert in the field of log management, SIEM and PCI DSS compliance currently involved with security solution strategy at Google Cloud. Dr. Anton Chuvakin has also authored several books on “PCI Compliance” and “Logging and Log Management: The Authoritative Guide to Understanding the Concepts Surrounding Logging and Log Management”.

Social Authority Score: 66

35. Yan Zhu

About: Yan Zhu and current CISO at Brave Software and a major contributor to open-source projects. She was recognized as one of Forbes 30 Under 30 in 2015 and was previously a staff technologist at the Electronic Frontier Foundation (EFF).

Social Authority Score: 71

36. Jeremiah Grossman

About: Jeremiah Grossman is the founder of WhiteHat Security, published author, and one of the most influential cyber bloggers around. Grossman has been featured in the Wall Street Journal, Forbes, NY Times, and hundreds of other media outlets across the globe. When he isn’t writing or delivering a keynote presentation, he can be found practicing Brazilian Jiu-Jitsu (he has a black belt) and is an avid off-road race driver.

Social Authority Score: 67

37. Moxie Marlinspike

About: Moxie Marlinspike is a computer security researcher, entrepreneur, and Founder of Signal, a cross-platform centralized encrypted messaging service. Prior to Signal, Marlinspike was the former head of the security team at Twitter. Marlinspike also holds a Master’s mariner license and enjoys sailing in his free time.

Social Authority Score: 82

38. Joseph Steinberg

About: Joseph Steinberg is a recognized thought leader and influencer in the fields of cybersecurity, privacy, and artificial intelligence. He is also one of the best and most-read columnists in the cybersecurity field. Within three months of going independent in April of 2018, his column reached 1m monthly views; by April of 2020, the column, known as Joseph Steinberg – Totally Candid, reached 2.5m monthly.

Social Authority Score: 69

39. Antonio Grasso

About: With nearly 197k Twitter followers and a combined social reach of over 750k, Antonio Grasso is without a doubt, one of the biggest influencers in the industry. The Naples-born computer scientist and researcher is the Founder of Digital Business Innovation and has explored themes such as Artificial Intelligence, Cybersecurity, Digital Transformation, the Internet of Things, and Blockchain. He is also a Fellow of the Royal Society of Arts.

Social Authority Score: 82

40. Ed Skoudis

About: Ed Skoudis is a well-respected cyber influencer and pen testing legend. He is a regular contributor to Dark Reading and other major cyber publications. Skoudis has taught cyber incident response and advanced penetration testing techniques to more than 12,000 cybersecurity professionals and SANS Faculty Fellow and the lead for the SANS Penetration Testing Curriculum. Skoudis also leads the team that created the SANS Holiday Hack Challenge with KringleCon, which hosts over 19,000 people annually.

Social Authority Score: 64

41. Jayson E. Street

About: Jayson E. Street is a DEF CON legend, hacker, author, and VP of InfoSec at SphereNY. Street consulted with the Secret Service in 2007 on the Wi-Fi security of the White House and is a regular at major conferences. When he isn’t behind his computer or giving lectures on hacking, he can be found traveling the globe in search of new adventures.

Social Authority Score: 68

42. Paul Asadoorian

About: Paul Asadoorian is the Founder and CTO of Security Weekly, a leading podcast on all issues related to cybersecurity featuring a wide variety of thought-leading guests and other industry experts. The Security Weekly YouTube channel has over 30k subscribers as well.

Social Authority Score: 54

43. Kim Zetter

About: Kim Zetter is an award-winning investigative journalist and author at Wired. She has covered the security scene since 1999. She has written for the Jerusalem Post, Los Angeles Times, San Francisco Chronicle, and Sydney Morning Herland. She has also written a book on the Kabbalah that has been published in multiple languages.

Social Authority Score: 80

44. Dr. ir Johannes Drooghaag

About: Dr. ir Johannes Drooghaag is the CEO of Spearhead Management and an internationally sought-after speaker and consultant. He is a top global influencer and thought leader and pioneer of Internet Safety for Kids which helps enable children and parents to use the internet responsibly and to learn more about cybersecurity.

Social Authority Score: 80

45. Adam Levin

About: Adam Levin is a nationally recognized expert on cybersecurity, privacy, identity theft, fraud, and personal finance. Levin is the Founder of CyberScout (a Sontiq brand). He has appeared on ABC News, The Today Show, Good Morning America, CBS Evening News, CNBC Closing Bell, MSNBC, Fox Business, and has been featured in almost all major security publications. His illustrious career spans over four decades as well.

Social Authority Score: 67

46. Nicole Perlroth

About: Nicole Perlroth is an award-winning cybersecurity journalist for The New York Times and cybersecurity influencer. She has covered major cyberattacks including the Iranian attack on oil companies, hundreds of Chinese cyberattacks, and North Korea’s cyberattacks against movie studios. She has also authored the book “This Is How They Tell Me The World Ends”.

Social Authority Score: 83

47. Kate Brew

About: Kate Brew is one of the most influential bloggers on cybersecurity and Editor of the AT&T Cybersecurity blog. Kate has over 15 years experience in product marketing and information security.

Social Authority Score: 57

48. Zeus Kerravala

About: Zeus Kerravala is the founder and Principal Analyst with ZK Research. Kerravala spent a decade as an analyst at Yankee Group prior to ZK Research and has authored many featured articles in major publications such as Dark Reading and Network World. We recently did a webinar with Zeus Kerravala on Demystifying the Realities of SASE which we highly recommend checking out.

Social Authority Score: 62

49. Katie Nickels

About: Kate Nickels is the Principal Intelligence Analyst for Red Canary, SANS Certified Instructor, and a big influencer in the cybersecurity world. In her free time, she volunteers with the Cyberjutsu Girls Academy (CGA), a program for teenage girls that seeks to inspire exploration and learning in cybersecurity and STEM.

Social Authority Score: 71

50. Tarah Wheeler

About: Tarah Wheeler is a Cyber Project Fellow at the Belfer Center for Science and International Affairs at Harvard University‘s Kennedy School of Government. She has spoken on information security at the European Union, at the Malaysian Securities Commission, for Foreign Policy, the OECD, and FTC. Tarah is also an accomplished poker player and has amassed $3,640 in lifetime cash in the World Series of Poker.

Social Authority Score: 68

51. Wendy Nather

About: Wendy Nather is the Head of Advisory CISOs at Cisco. She was listed as one of SC Magazine’s Reboot Leadership “Influencers” in 2018 and Women in IT Security “Power Players” in 2014. She is also co-author of The Cloud Security Rules and had served as Research Director of the Information Security Practice at independent analyst firm 451 Research.

Social Authority Score: 69

52. Jo Peterson

About: Jo Peterson is the VP of Cloud and Security for Clarify360 and founder of Cloud Girls, a vendor-neutral, not-for-profit community of female technology advocates. She has been named a CRN Woman of the Channel from 2016-2019, Oracle Top 15 People to Follow in Cybersecurity, Onalytica Top 50 Female Cybersecurity Influencers, and now Perimeter 81’s 200 Cybersecurity Influencers Making a Difference in 2021.

Social Authority Score: 75

53. Eric Vanderburg

About: Eric Vanderburg is the current VP Cybersecurity of TCDI and a well-respected thought leader. Vanderburg got his start in cybersecurity back in the early ’90s and was chair of the Computer Networking Technology program at Remington College’s Cleveland-West campus.

Social Authority Score: 62

54. Jackie Singh

About: Jackie Singh is the founder of Spyglass Security and regarded as one of the premier experts on the subject matter. She had joined the Biden campaign in July of 2020 as a senior cyber incident responder and threat analyst.

Social Authority Score: 73

55. Charlie Miller

About: Charlie Miller is one of the most well-respected names in the industry. He had previously worked at the National Security Agency and for Uber. Among his notable accomplishments, Miller had won a $10,000 cash prize at the hacker conference Pwn2Own in Vancouver, British Columbia in 2008 for being the first to find a critical bug in the MacBook Air.

Social Authority Score: 71

56. Maddie Stone

About: Maddie Stone is a Security Researcher at Google’s Project Zero. She has been featured on major publications such as Wired and has spoken at international security conferences such as OffensiveCon, REcon Montreal, DerbyCon, and the Women in Cybersecurity Conference. She has also hiked Kilimanjaro in 2019.

Social Authority Score: 73

57. Alyssa Miller

About: Alyssa Miller is a renowned hacker, security researcher, and international public speaker with over 15 years of experience in the cybersecurity field. At 12 she bought her first computer and landed a full-time job as a programmer at only 17 years old. Since then, she has been an instrumental figure in the cyber industry and Chapter Lead for the Women of Security (WoSEC) Meetup group.

Social Authority Score: 77

58. Katie Paxton-Fear

About: Katie Paxton-Fear is a bug bounty hunter, data scientist, and Ph.D. Student Early Career Researcher at Cranfield University. She creates educational cybersecurity videos on YouTube and has an audience of 10k subscribers. She has also been a panelist at many major events including HackerOne, Bugcrowd, and DefendCon.

Social Authority Score: 67

59. Jack Rhysider

About: Jack Rhysider is the host and creator of the popular Darknet Diaries podcast, one of the best and most acclaimed podcasts on security around. Jack is also a super talented artist and designs all of the artwork for the podcasts and website.

Social Authority Score: 70

60. Gene Kim

About: Gene Kim is a multiple award-winning CTO, researcher, and author, and has been studying high-performing technology organizations since 1999. Gene was featured by ComputerWorld as one of the “40 Innovative IT People to Watch Under the Age of 40” list in 2007 and has published six books including The Unicorn Project – a WSJ Bestseller.

Social Authority Score: 68

61. Runa A. Sandvik

About: Runa Sandvik is a privacy and security researcher and early developer of The Tor Project. She has interviewed Edward Snowden in 2014 and demonstrated how smart rifles with remote access can be hacked remotely. Runa is a board member of the Norwegian Online News Association and an advisor to The Signals Network and the Freedom of the Press Foundation.

Social Authority Score: 68

62. Rinki Sethi

About: Rinki Sethi is the current VP and CISO of Twitter and one of the leading voices in the field of security. She was also the recipient of the “One to Watch” Award with CSO Magazine and Executive Women’s Forum in 2014. Prior to joining Twitter, she had worked with Walmart, Intuit, and eBay.

Social Authority Score: 65

63. Ken Dilanian

About: Ken Dilanian is an NBC News correspondent covering national security and intelligence. Ken Dilanian was a reporter in the Los Angeles Times’ Washington, D.C., bureau from April 2010 until May 2014. Before that, he had spent three years at USA Today, where he covered foreign policy and Congress.

Social Authority Score: 78

64. Marc Goodman

About: Marc Goodman is a New York Times Best-Selling author, global strategist, and security consultant. Future Crimes: Inside the Digital Underground and the Battle for Our Connected World is an absolute must-read for everyone. He has even done a TED talk around the topic and has worked with organizations such as INTERPOL, the UN Counterterrorism Task Force, NATO, and the U.S. Government.

Social Authority Score: 47

65. Window Snyder

About: Window Snyder is an American computer security expert and Founder and CEO of Thistle Technologies. She was also a Senior Security Strategist at Microsoft and is co-author of Threat Modeling, a standard manual on application security. She also created the Blue Hat Microsoft Hacker Conference. Window was previously a top security officer at Square, Apple, Fastly, Intel, and Mozilla Corporation.

Social Authority Score: 47

66. Robert M. Lee

About: Robert M. Lee is the CEO and Founder of the industrial (ICS/OT) cybersecurity company Dragos. Considered a pioneer in the ICS threat intelligence and incident response community, Robert was awarded EnergySec’s 2015 Cyber Security Professional of the Year and inducted into Forbes’ 30 under 30 for Enterprise Technology. Robert got his start in the U.S. Air Force where he served as a Cyber Warfare Operations Officer tasked to the NSA.

Social Authority Score: 70

67. Samy Kamkar

About: Samy Kamkar is a renowned hacker that was responsible for the MySpace worm Samy in 2005, which was the fastest spreading virus of all time. Samy has worked with The Wall Street Journal on illicit mobile phone tracking. He also created the Evercookie, which appeared in a top-secret NSA document revealed by Edward Snowden. He is a regular guest speaker and GitHub contributor.

Social Authority Score: 80

68. Eleanor Dallaway

About: Eleanor Dallaway is the Editorial Director of Infosecurity Magazine. She enjoys interviewing industry professionals and has over 15 years of experience in the field. She founded the Women in Cybersecurity Networking Group worked and has worked on programs that encourage teenage girls in high school to get into the InfoSec and technology world.

Social Authority Score: 55

69. Ray [REDACTED]

About: Ray [REDACTED] is a network and Information Security researcher with 20 years of expertise in cyber defense research, application solution design, and next-generation network architectures. He is currently working for Darknet Diaries.

Social Authority Score: 70

70. Rob Fuller

About: Rob Fuller brings over 14 years of experience covering all facets of InfoSec. He is the current CTO and Red Team Captain of the Mid-Atlantic Collegiate Cyber Defense Competition (CCDC) and has also served as a technical advisor for HBO’s show Silicon Valley. Rob has taught at BlackHat USA since 2013 and remains a key speaker at conferences worldwide.

Social Authority Score: 66

71. Dan Goodin

About: Dan Goodin is Security Editor at Ars Technica and has been chronicling the exploits of white-hat, grey-hat and black-hat hackers since 2005. In his spare time, he enjoys gardening, cooking, and following the independent music scene.

Social Authority Score: 61

72. Ashley Willis (McNamara)

About: Ashley Willis (McNamara) is a contributor in the Linux and Go communities. Ashley is part of Microsoft’s Azure team, where she acted as a bridge between third-party developers and Microsoft, driving platform adoption through the developer community and driving change into products based on real-world customer/developer feedback. Ashley is also on the board of multiple engineering groups, including Redis Austin, Big Data Analytics Club, and Austin All-Girl Hack Night.

Social Authority Score: 67

73. Richard Bejtlich

About: Richard Bejtlich was a nonresident senior fellow in the Center for 21st Century Security and Intelligence, part of the Foreign Policy program at Brookings. He is the founder of TaoSecurity. He has also authored or co-authored nine books.

Social Authority Score: 63

74. Rebecca Herold

About: Rebecca Herold is the CEO of Privacy Policy and information security, privacy, and compliance consultant with over 25 years of experience. She has authored 19 books and published hundreds of articles in the field, and was a founding member and officer for the IEEE P1912 Privacy and Security Architecture for Consumer Wireless Devices Working Group.

Social Authority Score: 45

75. Tanya Janca

About: Tanya Janca AKA SheHacksPurple is the Founder of We Hack Purple, an online learning academy dedicated to teaching everyone how to create secure software and best-selling author of “Alice and Bob Learn Application Security”. Tanya has been coding and working in the IT industry for over two decades.

Social Authority Score: 74

76. Casey John Ellis

About: Casey John Ellis is the Chairman, Founder, and CTO of Bugcrowd and disclose.io which provides tools free open-source tools for safe harbor best practices. He has presented at DEF CON, Black Hat USA, RSA Conference, Techcrunch DISRUPT, Shmoocon, ENISA Incibe, Usenix ENIGMA, Derbycon, SOURCEConf, AISA, and AusCERT. The Aussie-born entrepreneur has over two decades of experience in information security as well.

Social Authority Score: 73

77. InfoSecSherpa (Tracy Z. Maleeff)

About: Tracy Z. Maleeff AKA InfoSecSherpa is an Information Security Analyst for The New York Times. The one-time librarian turned InfoSec expert has been featured in the Tribe of Hackers: Cybersecurity Advice and Tribe of Hackers book series and has won numerous awards including the Women in Security Leadership Award from the Information Systems Security Association.

Social Authority Score: 75

78. Brian Honan

About: Brian Honan is an independent security consultant and major influencer based in Dublin, Ireland. He is also the European editor for the SANS Institute’s weekly SANS NewsBites newsletter, founder and head of IRISSCERT which is Ireland’s first CERT, and former Special Advisor on Cybersecurity to Europol.

Social Authority Score: 72

79. Accidental CISO

About: The Accidental CISO is a well-known cybersecurity influencer. He is extremely active on Twitter and definitely worth following.

Social Authority Score: 71

80. Brute Logic (Rodolfo Assis)

About: Rodolfo Assis, better known as Brute Logic is a Brazilian-born self-taught computer hacker and security researcher. His main interest and research involves Cross-Site Scripting (XSS) and has helped fix over 1,000 XSS vulnerabilities in web applications worldwide.

Social Authority Score: 67

81. Josh Corman

About: Josh Corman is the Founder of I Am The Cavalry and Chief Strategist for CISA regarding COVID, healthcare, and public safety. His security blog Cognitive Dissidents is definitely worth checking out as well.

Social Authority Score: 42

82. MalwareJake (Jake Williams)

About: Malware Jake aka Jake Williams is a cybersecurity specialist and SANS Senior Instructor. His Infosec consultancy was involved in high-profile cases including the malware analysis for the 2015 cyber attack on the Ukraine power grid. Williams was awarded the National Security Agency (NSA) Exceptional Civilian Service Award, which is given to fewer than 20 people annually.

Social Authority Score: 75

83. Jane Frankland

About: Jane Frankland is a London-based cybersecurity speaker, author, and influencer with over 21 years of experience. She built a seven-figure business from the ground up without seed capital. Among her other accolades, she has been named as the third most influential person in cybersecurity in the UK and a top twenty global influencer, and now she joins our exclusive list of 200 Cybersecurity Influencers Making A Difference in 2021.

Social Authority Score: 49

84. Dustin Volz

About: Dustin Volz covers cybersecurity and intelligence for The Wall Street Journal based out of Washington DC.

Social Authority Score: 74

85. Javvad Malik

About: Javvad Malik is a Security Awareness Advocate at KnowBe4 and one of the industry’s most prolific video bloggers. Javvad was one of the co-founders of the Security B-Sides London conference and has authored several books.

Social Authority Score: 53

86. Leigh Honeywell

About: Leigh Honeywell is the founder and CEO of Tall Poppy, where she helps companies protect their employees from online harassment. She was previously a Technology Fellow at the ACLU’s Project on Speech, Privacy, and Technology, and co-founded two hackerspaces, HackLabTO in Toronto, and a feminist space called the Seattle Attic Community Workshop in Pioneer Square, Seattle.

Social Authority Score: 76

87. Raj Samani

About: Raj Samani is the current Chief Scientist at McAfee and is a special advisor to the European Cybercrime Centre (EC3) in The Hague. He has been recognized for his contribution to the computer security industry through numerous awards, including the Infosecurity Europe Hall of Fame, Peter Szor award, and Intel Achievement Award.

Social Authority Score: 67

88. Helen Yu

About: Helen Yu is the founder and CEO of Tigon Advisory, a CXO-as-a-Service growth accelerator. She has been named a Top 10 Global Influencer in Digital Transformation by IBM; Top 35 Women in Finance by Onalytica; and Top 100 B2B Thought Leader, Top 10 Cybersecurity and AI Thought Leader by Thinkers360.

Social Authority Score: 74

89. Chris Vickery

About: Chris Vickery is a cybersecurity expert and current Director of Cyber Risk Research at UpGuard. Chris has assisted investigations conducted by the Federal Trade Commission (FTC), the Federal Bureau of Investigation (FBI), the U.S. Secret Service, and the US Department of Health and Human Services (HHS).

Social Authority Score: 81

90. Sherrod DeGrippo

About: Sherrod DeGrippo is the Sr. Director of Threat Research and Detection for Proofpoint with over 16 years of infosec experience. She has been quoted in publications such as The Wall Street Journal, Associated Press, and Ars Technica.

Social Authority Score: 71

91. Dave Lewis

About: Dave Lewis is the Global Advisory CISO at Cisco with over two decades of industry experience. He is the founder of the security site Liquidmatrix Security Digest and co-host of the Liquidmatrix podcast. He has also given keynotes at major conferences across the globe.

Social Authority Score: 58

92. Keren Elazari

About: Keren Elazari is an internationally recognized security analyst, researcher, author, and speaker. Keren Elazari is the first Israeli woman to give a TED talk at the official TED Conference. Keren’s TED talk about hackers has been viewed by millions, translated to 30 languages, and is one of the most-watched talks on TED.com on the topic of cybersecurity.

Social Authority Score: 60

93. Whitney Champion

About: Whitney Champion is a security architect, engineer, developer, and co-founder of Recon InfoSec. She is also a super talented artist that likes to doodle around with cool things and an avid Crossfitter.

Social Authority Score: 63

94. Matt Devost

About: Matt Devost is the CEO & Co-Founder of OODA and a well-recognized thought leader in the security field. He has appeared on CNN, MSNBC, FoxNews, CBS News, and BBC television as an expert on terrorism and cybersecurity. Matt is also on the Advisory Board for the D.C.-based non-profit, MissionLink and is a Mentor at the Virginia cybersecurity accelerator Mach37.

Social Authority Score: 66

95. Chris Eng

About: Chris Eng is the Chief Research Officer at Veracode. He is a review board member for the Black Hat USA and Kaspersky SAS conferences and has appeared on major media outlets such as Bloomberg, Fox Business, and CBS.

Social Authority Score: 53

96. InfoSteph

About: Steph is a security analyst for a retail company with a background in journalism and web hosting. She spends her time mentoring high school students and hosting virtual labs via Women In Tech-a-thons.

Social Authority Score: 68

97. Roberto Rodriguez

About: Roberto Rodriguez is a Threat Researcher at Microsoft and founder of the Open Threat Research community. He routinely posts on the blog with helpful tips and guides.

Social Authority Score: 62

98. Lisa Forte

About: Lisa Forte is a British-born cybersecurity speaker and Partner at Red Goat. She is a mountaineer and was named one of the Top 100 Women in Tech. She is an expert in social engineering, insider threats, and helping large companies rehearse for a cyber attack.

Social Authority Score: 73

99. Kate Fazzini

About: Kate Fazzini is the CEO of Flore Albo and a professor of cybersecurity at the University of Maryland. She teaches in the Cyber Intelligence program at Georgetown University and is the principal cybersecurity expert at CNBC, having previously been cybersecurity correspondent for the Wall Street Journal.

Social Authority Score: 61

100. Sivan Tehila

About: Sivan Tehila is the Director of Solution Architecture at Perimeter 81 and a Cybersecurity expert with over 15 years of experience. She is the Founder of Cyber Ladies NYC and Adjunct Professor of Cybersecurity at Yeshiva University. On retiring from the IDF intelligence corps, Sivan served as a cybersecurity consultant for the Israel Railways and CISO of Research and Analysis Division, and Head of the Information Security Department of the Intelligence Corps.

Social Authority Score: 46

101. Rachel Tobac

About: Rachel Tobac is a social engineer and the Co-founder of SocialProof Security. Rachel is also Chair of the Board for the nonprofit Women in Security and Privacy (WISP) and one of the most influential women in cybersecurity.

Social Authority Score: 77

102. John Kindervag

About: John Kindervag is the Creator of Zero Trust and former Field CTO at Palo Alto Networks. He is considered one of the world’s foremost cybersecurity experts and has spoken at many security conferences and events, including RSA, SXSW, ToorCon, ShmoCon, InfoSec Europe, and InfoSec World.

Learn more about the Zero Trust architecture and why the mantra of “never trust, always verify” is crucial to minimizing data breaches and reducing the attack surface.

Social Authority Score: 37

103. Steve Morgan

About: Steve Morgan is the Founder of Cybersecurity Ventures, Editor-in-Chief at Cybercrime Magazine, and Executive Producer at Cybercrime Radio. He is co-author of the book, “Women Know Cyber: 100 Fascinating Females Fighting Cybercrime” and has written more than 500 articles for Forbes, CSO, and others.

Social Authority Score: 63

104. Costin Raiu

About: Costin Raiu is the Director of, Global Research & Analysis Team at Kaspersky with over 24 years of experience in anti-virus technologies and security research. He is a member of the Virus Bulletin Technical Advisory Board, a member of the Computer AntiVirus Researchers’ Organization (CARO), and a reporter for the Wildlist Organization International. Some of his hobbies include chess, photography, and Science Fiction literature.

Social Authority Score: 73

105. Marietje Schaake

About: Marietje Schaake is the International Director of Policy, Stanford’s Cyber Policy Center, International Policy Fellow, Institute for Human-Centered AI, and President, CyberPeace Institute. She is a Dutch politician who served as a Member of the European Parliament from the Netherlands between 2009 and 2019. The Wall Street Journal called her “Europe’s most wired politician.” She publishes op-ed’s in the Financial Times, The Guardian, and Bloomberg.

Social Authority Score: 76

106. Nicolas Krassas

About: Nicolas Krassas is a Swiss-born security researcher and influencer. He is a contributor to Reddit’s popular r/ReverseEngineering Subreddit and regularly Tweets about helpful hacking tips.

Social Authority Score: 72

107. Zack Whittaker

About: Zack Whittaker is the Security Editor at TechCrunch and covers all security-related topics ranging from Malware to major data breaches.

Social Authority Score: 77

108. Christophe Veltsos

About: Christophe Veltsos is a professor in the Department of Computer Information Science at Minnesota State University where he regularly teaches Information Security and Information Warfare classes.

Social Authority Score: 48

109. Whitney Merrill

About: Whitney Merrill is Privacy Counsel at Asana and Founder of Crypto & Privacy Village. She received the 2017 Women in Security Award and was named one of the 2017 Top Women in Cybersecurity by CyberScoop. Previously she was Privacy, eCommerce & Consumer Protection Counsel at Electronic Arts (EA) and an attorney at the Federal Trade Commission.

Social Authority Score: 76

110. Alan Woodward

About: Professor Alan Woodward is a British-born internationally renowned computer security expert and computer scientist at the University of Surrey. He has been involved in some of the most significant advances in computer technology and was elected as a Fellow of the British Computer Society, Institute of Physics, and the Royal Statistical Society.

Social Authority Score: 58

111. (Snow) Stephanie Carruthers

About: Stephanie Carruthers, simply known as Snow on Twitter, is a Chief People Hacker at IBM Security and Global Social Engineering Expert, X-Force Red. She leads the social engineering practice, focusing on open-source intelligence gathering, phishing, vishing, and physical security assessments.

Social Authority Score: 66

112. Jez Humble

About: Jez Humble is an SRE at Google Cloud and is co-author of The DevOps Handbook, Lean Enterprise, and the Jolt Award-winning Continuous Delivery. He also teaches at UC Berkeley.

Social Authority Score: 70

113. Matt Suiche

About: Matt Suiche is a French-born hacker and entrepreneur widely known as the founder of MoonSols, and co-founder of CloudVolumes before it was acquired. He is a memory forensics expert and also known to have discovered multiple security flaws in multiple Microsoft Windows kernel components. He previously worked as a researcher for Netherlands Forensic Institute in The Hague.

Social Authority Score: 60

114. Natalie Silvanovich

About: Natalie Silvanovich is a security researcher on Google Project Zero and Tamagotchi Hacker. Previously, she worked in mobile security on the Android Security Team at Google and as a team lead of the Security Research Group at BlackBerry.

Social Authority Score: 62

115. gabsmashh | Advanced Persistent Brunette

About: gabsmashh | Advanced Persistent Brunette is a security engineer, genetic scientist, and #MalwareTechPodcast host. She also has almost 60k followers on Twitter.

Social Authority Score: 76

116. Mike Vizard

About: Mike Vizard is a seasoned IT journalist with over 25 years of experience. He has contributed to IT Business Edge, Channel Insider, Baseline, VentureBeat, Security Boulevard, and DevOps.com. Previously, Vizard was the editorial director for Ziff-Davis Enterprise as well as Editor-in-Chief for CRN and InfoWorld.

Social Authority Score: 49

117. Marc Rogers

About: Known as “Cyberjunky”, “Cjunky” or just “CJ” in the hacker community, Marc Rogers is one of the founders of The CTI League, which was featured in this year’s edition of the “WIRED25: People Who Are Making Things Better.” He is currently the VP of Cybersecurity at Okta and part of the Ransomware Task Force (RTF).

Social Authority Score: 64

118. Jason Haddix

About: Jason Haddix is the Head of Trust and Security at Bugcrowd and regular contributor at GitHub. Jason’s interests and areas of expertise include mobile penetration testing, black box web application auditing, network/infrastructure security assessments, and static analysis. He was also the Director of Penetration Testing for HP Fortify and held the #1 rank on the Bugcrowd researcher leaderboard for 2014/2015.

Social Authority Score: 67

119. Rafay Baloch

About: Rafay Baloch is an information security expert and evangelist. He is listed as Top 25 Threat Seekers of 2014 and The 15 Most Successful Ethical Hackers WorldWide by SCmagazine for the issues he uncovered with Android. Checkmarkx has listed Rafay Baloch as a Top 5 Ethical Hackers Of World. His work has been featured Forbes, BBC, and WSJ.

Social Authority Score: 59

120. Heath Adams

About: Heath Adams, known as “The Cyber Mentor” on social media, is a Senior Penetration Tester and the Founder and CEO of TCM Security. He is a highly in-demand course instructor at Udemy with a best-selling course on Open-Source Intelligence (OSINT) Fundamentals.

Social Authority Score: 74

121. Kim Nash

About: Kim Nash is deputy editor of WSJ Pro Cybersecurity, covering strategic and tactical technology security topics for a business audience. Previously, she wrote about enterprise technology for WSJ’s CIO Journal.

Social Authority Score: 47

122. Larry Dignan

About: Larry Dignan is the Global Editor in Chief at ZDNet and Editorial Director of TechRepublic. His column Between the Lines on ZDNet covers a wide range of technology topics including several super interesting pieces on Google I/O. He has been publishing articles around tech and cybersecurity since 1995.

Social Authority Score: 49

123. Micah Lee

About: Micah Lee is the Director of Infosec at The Intercept. He is a computer security engineer and an open-source software developer who writes about technical topics like digital and operational security, encryption tools, whistleblowing, and hacking. He is also founder and board member of the Freedom of the Press Foundation and a member of the Distributed Denial of Secrets advisory board.

Social Authority Score: 71

124. Rik Fërgüson

About: Rik Ferguson is VP Security Research at Trend Micro, and one of the leading experts in information security with over 25 years of experience. He has appeared on major media publications such as the BBC, CNN, CNBC, Channel 4, Sky News, and Al-Jazeera English. In April 2011 Rik was inducted into the Infosecurity Hall of Fame.

Social Authority Score: 60

125. James Arlen

About: James Arlen is the Chief Information Security Officer at Aiven. He was previously the Director of Production Engineering at Salesforce Heroku. Arlen’s expertise, which includes security certifications in CISSP, CISA, and CRISC, has led him to be a known voice in the industry as a blogger, podcaster, speaker, and contributor to media and standards.

Social Authority Score: 45

126. Chris Parker

About: Chris Parker is the Founder of WhatIsMyIPAddress.com and host of Easy Prey Podcast, helping listeners learn how to avoid being an easy target for scammers and fraudsters online and in the real world.

Social Authority Score: 49

127. Dr. Nicole Forsgren

About: Dr. Nicole Forsgren is the VP of Research & Strategy at GitHub. She is also co-author of the best-selling book Accelerate: Building and Scaling High Performing Technology Organizations and a globally recognized speaker. Her work has been featured in the Wall Street Journal, Forbes, ComputerWorld, and InfoWeek.

Social Authority Score: 69

128. fully vaccinated overcaffinated bat

About: @mzbat or fully vaccinated overcaffinated bat is an InfraSec at Truss Works. She has over 47.5k followers and is a regular on Twitter.

Social Authority Score: 66

129. Bridget Kromhout

About: Bridget Kromhout is a Principal Cloud Developer Advocate at Microsoft and is a regular podcaster at Arrested DevOps. She leads the devopsdays organization globally and the DevOps community at home in Minneapolis, Minnesota.

Social Authority Score: 65

130. Jobert Abma

About: Jobert Abma is the Co-founder of HackerOne, the largest in the bug bounty space with over 500,000 registered hackers. He is also a regular contributor on Quora and GitHub, and one of the most influential people in the cyber field.

Social Authority Score: 56

131. Secure The Bag (Keirsten Brager)

About: Keirsten Brager, better known in the Twitterverse as Secure The Bag, went from being a free lunch kid to Sr. Security Consultant specializing in critical infrastructure. She was recently named one of Dark Reading’s top women in security who are changing the game.

Social Authority Score: 65

132. Theresa Payton

About: Theresa Payton is one of the nation’s leading experts in cybersecurity and IT strategy and CEO of Fortalice Solutions. Theresa was named one of the top 25 Most Influential People in Security by Security Magazine and One of Infosec’s Rising Stars and Hidden Gems by Tripwire. In 2005 she was honored as Charlotte, NC’s Woman of the Year. In 2014 she co-authored, with Ted Claypoole, the book Privacy in the Age of Big Data​: Recognizing Threats, Defending Your Rights, and Protecting Your Family, which was subsequently featured on the Daily Show with John Stewart.

Social Authority Score: 55

133. Bob Carver

About: Bob Carver is a CISM and CISSP that helps uncover previously unseen cybersecurity risks and creatively architect solutions. He had monitored hundreds of botnets and ten of thousands infected endpoints including PCs, Smartphones, and Apple OS X, and is a regular contributor to the Verizon-wide risk team.

Social Authority Score: 77

134. Florian Roth

About: Florian Roth is a German-born cyber entrepreneur and creator of the THOR scanner as part of Nextron Systems suite of core products. He is also a contributor to GitHub, where he has many projects in his impressive resume.

Social Authority Score: 81

135. Kenneth Holley

About: Kenneth Holley is a cybersecurity expert and the founder and CEO of Silent Quadrant – a Washington, D.C.-based information technology services and consulting practice serving the nation’s top lobby firms.

Social Authority Score: 60

136. Mudge (Peiter Zatko)

About: Peiter Zatko, better known as Mudge, is a network security expert and was the most prominent member of the high-profile hacker think tank, the L0pht. He was the original author of the password cracking software L0phtCrack. Mudge was previously head of security at Twitter and program manager at DARPA where he oversaw cybersecurity research.

Social Authority Score: 66

137. Scott Helme

About: Scott Helme is an Information Security Consultant and blogger based in the UK. He has been featured in many national and international news outlets including the BBC, The Guardian, The Telegraph, CIO, and Wired. He is the creator of Report URI and Security Headers and an expert on hacking and encryption.

Social Authority Score: 68

138. Emily Freeman

About: Emily Freeman is a technologist and a storyteller who helps engineering teams improve their velocity. She is also the author of “DevOps for Dummies” and “97 Things Every Cloud Engineer Should Know.”

Social Authority Score: 77

139. Cybersecurity Meg

About: Cybersecurity Meg is a CISSP and Cybersecurity Incident Response Manager for a Fortune top 100 company. Her YouTube channel features educational videos on Cybersecurity and she has even participated in a Reddit AMA. She is currently living in Spain.

Social Authority Score: 69

140. Dr. Alissa Abdullah (Dr. Jay)

About: Dr. Alissa “Dr. Jay” Abdullah leads the Emerging Corporate Security Solutions team at Mastercard, Fortune 100 CSO, and former White House Deputy CIO. Dr. Abdullah holds a PhD in Information Technology Management from Capella University, a master’s degree in Telecommunications and Computer Networks from The George Washington University, and a bachelor’s degree in mathematics from Savannah State University.​

Social Authority Score: 60

141. Bill Detwiler

About: Bill Detwiler is Editor in Chief of TechRepublic and the host of Cracking Open, CNET, and TechRepublic’s popular online show. Prior to joining TechRepublic in 2000, Bill was an IT manager, database administrator, and desktop support specialist in the social research and energy industries. He has bachelor’s and master’s degrees from the University of Louisville, where he has also lectured on computer crime and crime prevention.

Social Authority Score: 45

142. Ellen Nakashima

About: Ellen Nakashima is a Pulitzer Prize-winning national security reporter for The Washington Post. She covers cybersecurity counterterrorism and intelligence issues and has been with The Post since 1995.

Social Authority Score: 75

143. Tim Starks

About: Tim Starks is a Cybersecurity reporter/senior editor at CyberScoop and has written about cybersecurity since 2003 when he began at Congressional Quarterly as a homeland security reporter. He also was the Statehouse Bureau Chief at the Evansville Courier & Press and established the Washington bureau of the New York Sun and was part of the Politico team. Tim is also the founder of The Queensberry Rules, dubbed an “indispensable boxing blog” by the Wall Street Journal.

Social Authority Score: 60

144. Justin Seitz

About: Justin Seitz is a Senior Security Researcher for Immunity, where he spends his time bug hunting, reverse engineering, writing exploits, and coding Python. He is the author of “Gray Hat Python”, the first book to cover the use of Python for security analysis. He is also the Creator of Hunchly, a web capture tool designed for online investigations.

Social Authority Score: 57

145. David Linthicum

About: David is the Chief Cloud Strategy Officer at Deloitte Consulting, and a cloud computing thought leader, executive, consultant, author, and speaker. David has written 13 books and over 5,000 articles on computing. He has made numerous appearances on radio and TV programs, and most recently, he was named the #1 cloud influencer in an Apollo Research report.

Social Authority Score: 51

146. Christiaan Beek

About: Christiaan Beek manages threat intelligence research within Intel Security’s Office of the CTO at McAfee. He speaks regularly at conferences, including BlackHat and BlueHat, and contributed to the best-selling security book “Hacking Exposed.”

Social Authority Score: 57

147. Swati Khandelwal

About: Swati Khandelwal is a Senior cybersecurity and privacy reporter and managing director at The Hacker News. She covers hacking-related articles and is a regular on Twitter.

Social Authority Score: 58

148. John Hammond

About: John Hammond is a Security Researcher at Huntress and former Department of Defense Cyber Training Academy curriculum developer. He developed training material and infosec challenges for events such as PicoCTF and the “Capture the Packet” competition at DEFCON US. He also has over 232k YouTube subscribers!

Social Authority Score: 65

149. Nikita Kronenberg

About: Nikita Kronenberg is an expert hacker and the Director of Content & Coordination at DEF CON. She is super active on the Twitterverse.

Social Authority Score: 57

150. Sam Curry

About: At only 21 years of age, Sam Curry is a full-time bug bounty hunter, most notably finding a security vulnerability in Tesla after cracking his windshield. Curry has spoken on ethical hacking, web application security, and vulnerability disclosure at conferences including DEFCON, Black Hat Briefings, and Kernelcon.

Social Authority Score: 65

151. Kelly Jackson Higgins

About: Kelly Jackson Higgins is the Executive Editor at Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise Magazine, Virginia Business magazine, and other major media properties. She was recently selected as one of the Top 10 Cybersecurity Journalists in the U.S. and named as one of Folio’s 2019 Top Women in Media.

Social Authority Score: 47

152. Matteo (Matthew Mitchell)

About: Matthew Mitchell AKA Matteo is the Founder of CryptoHarlem, which aims to drive security and encryption within the African American communities via educational tools. Matthew was also named a Wired 25 2020 and hosts a weekly Livestream on his site.

Social Authority Score: 62

153. Jenny Radcliffe

About: A self-professed “burglar for hire and professional con-artist” Jenny Radcliffe (The People Hacker) is a social engineer and Founder of Human Factory Security in the UK. She also hosts the award-winning podcast “The Human Factor” on her site which was named Best European Security Podcast 2018-2019. **TELL HER SHE MISSPELLED BURGULAR on SPEAKING section of site.

Social Authority Score: 63

154. Peter Van Eeckhoutte

About: Peter Van Eeckhoutte is a Belgian-born cybersecurity researcher, hacker, founder of Corelan Team, and the author of the well-known tutorials on Win32 Exploit Development. Peter has been an active member of the IT Security community since 2000 and has presented at various international security conferences (Athcon, Hack In Paris, DerbyCon, ISSA Belgium).

Social Authority Score: 54

155. Daphne Keller

About: Daphne Keller directs the Program on Platform Regulation at Stanford’s Cyber Policy Center and was formerly the Director of Intermediary Liability at CIS. Her work focuses on platform regulation and Internet users’ rights. Until 2015 Daphne was Associate General Counsel for Google, where she had primary responsibility for the company’s search products.

Social Authority Score: 68

156. Chris Bing

About: Chris Bing is a cybersecurity reporter for CyberScoop. He has written about security, technology, and policy for the American City Business Journals, DC Inno, International Policy Digest, and The Daily Caller. Chris became interested in journalism as a result of growing up in Venezuela and watching the country shift from a democracy to a dictatorship between 1991 and 2009. He is also a fan of the Premier League.

Social Authority Score: 71

157. evilsocket (Simone Margaritelli)

About: Simone Margaritelli, better known as evilsocket a former hacker who now breaks stuff to make the world a safer place. Based in Italy, Simone currently works as a mobile security researcher and senior developer at Zimperium’s world-renowned research and development team, zLabs.

Social Authority Score: 69

158. Lea Kissner

About: Dr. Lea Kissner is the Head of Privacy Engineering at Twitter, a member of the Advisory Board of the IAPP Privacy Engineering Section, and an organizer of the OURSA conference. She earned a PhD in computer science (with a focus on cryptography) at Carnegie Mellon University and a BS in electrical engineering and computer science from UC Berkeley.

Social Authority Score: 67

159. David Bisson

About: David Bisson is an infosec news junkie and security journalist. He works as Contributing Editor for IBM’s Security Intelligence, Associate Editor for Tripwire’s “The State of Security” blog, and Contributing Writer for Venafi. David has contributed 1,753 posts to The State of Security.

Social Authority Score: 49

160. Ted Demopolous

About: Ted Demopoulos’ background includes over three decades of experience in Information Security and Business, including 30 years as an independent consultant. Ted helped start a successful information security company, was the CTO at a “textbook failure” of a software startup. He is a frequent speaker at conferences and other events, author of the forthcoming Infosec Consulting 101, author of Infosec Rock Star: How to Accelerate Your Career Because Geek Will Only Get You So Far.

Social Authority Score: 49

161. Kelly Shortridge

About: Kelly Shortridge is co-author of Security Chaos Engineering (O’Reilly Media) and is best known for their work applying behavioral economics, resilience, and DevOps principles to information security. She has spoken at major technology conferences internationally, including Black Hat USA, O’Reilly Velocity Conference, RSA Conference, and is a Pwnie Awards judge.

Social Authority Score: 67

162. Mohit Kumar

About: Mohit Kumar is the Founder and Editor-in-Chief of The Hacker News, which attracts over 10 million monthly readers. He is also a Cyber Security Analyst, Infosec blogger, speaker, and hacker.

Social Authority Score: 58

163. Christina Camilleri

About: Christina Camilleri is a Security Security Engineer at Netflix and video game enthusiast. Christina’s primary areas of expertise are web application penetration testing, open-source intelligence (OSINT), and social engineering. She has also won the highest scoring OSINT report for two years in a row in the DEFCON Social Engineering CTF.

Social Authority Score: 57

164. Dave Bittner

About: Dave Bittner is the producer and host of the CyberWire podcast, a top-rated daily cybersecurity news program produced in Baltimore. He is also a skilled public speaker, voice-over artist, emcee, actor, and singer.

Social Authority Score: 54

165. Ryan Naraine

About: Ryan Naraine is Editor-at-Large at SecurityWeek and host of the popular Security Conversations podcast series. Ryan is a journalist and cybersecurity strategist with more than 20 years of experience covering IT security and technology trends. He is a co-founder of Threatpost and the global SAS conference series.

Social Authority Score: 74

166. Adrian Sanabria

About: Adrian Sanabria is Co-Founder and Director of Research at Savage Security. He has spent far more time dealing with PCI than is healthy for an adult male of his age. Adrian is involved in various volunteer projects within the security community, such as the National Board of Information Security Examiners’ (NBISE) efforts to provide analysis on information security job roles and hiring through the Operational Security Testing Panel.

Social Authority Score: 60

167. Chris Wysopal

About: Chris Wysopal is Co-Founder and Chief Technology Officer at Veracode and a member of the L0pht where he was a vulnerability researcher. In 2008, Wysopal was recognized for his achievements in the IT industry by being named one of the 100 Most Influential People in IT by eWeek and selected as one of the InfoWorld CTO 25.

Social Authority Score: 70

168. Rob May

About: Rob May is a TEDx presenter and a published author. He has the Freedom of the City of London, is a Liveryman in The Worshipful Company of World Traders, and has twice exercised his right to walk sheep over London Bridge! Rob is also on The Advisory Board of The Cyber Resilience Centre for the South East.

Social Authority Score: 75

169. Jeff Stone

About: Jeff Stone is the editor-in-chief of CyberScoop, with a special interest in cybercrime, disinformation, and U.S. courts. He previously covered financial and legal aspects of security as an editor at the Wall Street Journal, and technology policy for sites including the Christian Science Monitor and the International Business Times.

Social Authority Score: 67

170. Dr. Jessica Barker

About: Dr. Jessica Barker is the Co-Founder and Co-Chief Executive Officer of Cygenta, and a leader in the human nature of cybersecurity. She has given cybersecurity outreach sessions to over 5,000 school students and was awarded as one of the UK’s Tech Women 50.

Social Authority Score: 57

171. Johnny Long

About: Johnny Long, otherwise known as “j0hnny” or “j0hnnyhax”, is a computer security expert and long-time Google hacking specialist. He is also the founder of Hackers for Charity, which collects computer and office equipment to donate to underdeveloped countries.

Social Authority Score: 44

172. Will Schroeder

About: Will Schroeder aka “harmj0y” is an offensive engineer and red teamer. He is a co-founder of Empire/Empyre, BloodHound, and the Veil-Framework developed PowerView and PowerUp, is an active developer on the PowerSploit project, and a Microsoft PowerShell MVP. He has presented at a number of conferences, including DEF CON, DerbyCon, Troopers, BlueHat Israel, and various Security BSides.

Social Authority Score: 64

173. Teri Radichel

About: Teri is the CEO of 2nd Sight Lab and is the founding organizer of the Seattle AWS Architects and Engineers Meetup which has nearly 3000 members. She is the author of “Cybersecurity for Executives in the Age of Cloud” and writes a blog called Cloud Security. Teri also received the SANS Difference Makers Award for cloud security innovation.

Social Authority Score: 55

174. Bill Brenner

About: Bill Brenner is the Director of Research at IANS and founder of The OCD Diaries, a blog that covers everything from the latest cyber news to his personal thoughts on various issues.

Social Authority Score: 48

175. Lenny Zeltser

About: Lenny Zeltser helps shape global cybersecurity practices by teaching incident response and malware defenses at SANS Institute. He is the CISO at Axonius and is also on the Board of Directors of the SANS Technology Institute. He has earned the prestigious GIAC Security Expert professional designation and developed the Linux toolkit REMnux, which is used by malware analysts throughout the world.

Social Authority Score: 59

176. Help Net Security (Mirko Zorz)

About: Mirko Zorz is the editor-in-chief at Help Net Security Publications, an independent cybersecurity news site since 1998. Help Net Security covers a wide range of topics, industry news, and expert analysis on what’s happening in the world of security.

Social Authority Score: 70

177. SecBarbie (Erin Jacobs)

About: Erin Jacobs aka SecBarbie is a Partner at UrbaneSec, BBS Sysop from the early 90’s turned business major, musician turned DJ, IT geek turned corporate sell-out CIO. She has presented at numerous high-profile security conferences including RSA, DEF CON, Brucon, Derbycon, Hack In The Box, and ISC2 Congress just to name a few.

Social Authority Score: 43

178. Dan Lohrmann

About: Dan Lohrmann is the Chief Strategist and CSO for Security Mentor. Dan led the Michigan government’s cybersecurity and technology infrastructure teams from May 2002 – August 2014. He is the author of two books – “Virtual Integrity: Faithfully Navigating the Brave New Web” and “BYOD For You: The Guide to Bring Your Own Device to Work.”

Social Authority Score: 54

179. Lorenzo Franceschi-Bicchierai

About: Lorenzo Franceschi-Bicchierai is a staff writer at VICE Motherboard in Brooklyn, New York, where he covers hacking, information security, and digital rights. Prior to working at Motherboard, Lorenzo worked at Mashable and at Wired’s Danger Room. In his spare time, you can find him eating mozzarella, or arguing with the referee during a soccer match.

Social Authority Score: 75

180. Joe Uchill

About: Joe Uchill is a Senior Reporter SC Magazine. Joe is a long-time cybersecurity reporter who has written for places like Axios and Motherboard and has been covering cybersecurity since 2014.

Social Authority Score: 61

181. Lee Holmes

About: Lee Holmes is a Principal Security Architect in Azure Security, an original developer on the PowerShell team, fanatical hobbyist, and author of the Windows PowerShell Cookbook.

Social Authority Score: 64

182. Alison Gianotto

About: Alison Gianotto aka @snipeyhead has one of the most fascinating bios out there. She is a hacker and the CEO of Snipe-IT, a free open-source IT asset management application. She was featured in People Magazine, Web Designer Magazine, and co-authored several books on PHP/MySQL. Alison is also a nationally recognized expert on animal abuse and one of the 10 finalists in the Animal Planet Hero of the Year contest in 2006.

Social Authority Score: 75

183. Dave Shackleford

About: Dave Shackleford is the owner and principal consultant of Voodoo Security and faculty at IANS Research. Dave is a SANS Analyst, serves on the Board of Directors at the SANS Technology Institute, and helps lead the Atlanta chapter of the Cloud Security Alliance.

Social Authority Score: 47

184. Ashkan Soltani

About: Ashkan Soltani is an independent researcher and technologist specializing in privacy, security, and technology policy. Ashkan was also recognized as part of the 2014 Pulitzer-winning team for his contributions to the Washington Post’s coverage of National Security issues. Ashkan previously served as a Senior Advisor to the U.S. Chief Technology Officer in the White House Office of Science and Technology Policy and as the Chief Technologist for the Federal Trade Commission.

Social Authority Score: 70

185. Audrey Renée Bentley

About: Audrey Renée Bentley is a BioTech InfoSec specialist. She specializes in healthcare privacy and genomics. She maintains her BentleyBioSec Blog and has over 21k followers on Twitter.

Social Authority Score: 67

186. Daniel Cuthbert

About: Daniel Cuthbert is the Chief Operating Officer at SensePost. With a career spanning 20+ years in penetration testing, red teaming, and secure software design. He is the original co-author of the OWASP Testing Guide, released in 2003, and now the co-author of the OWASP Application Security Verification Standard (ASVS).

Social Authority Score: 74

187. Joseph Cox

About: Joseph Cox is a cyber journalist covering hackers, crime, and privacy for Motherboard. His work has appeared on VICE, Medium, HuffPost, VICE UK, Journal of Banking Regulation, Springer, The Daily Beast, MIT Technology Review, The Daily Dot, Times of Israel, NotebookReview, and more.

Social Authority Score: 77

188. Jek Hyde (Sophie Pingor)

About: Sophie Pingor, aka Jek Hyde, is a renowned pen tester and social engineer. She is a University of North Texas graduate with a degree in journalism. Sophie worked on the school newspaper and then after college started working at KERA radio in the Dallas-Fort Worth area. It was there that she became interested in security, volunteering for stories about the latest breaches.

Social Authority Score: 55

189. Chuck Brooks

About: Chuck Brooks is one of the most followed and well-recognized thought leaders in the cyber field. He was named by Thompson Reuters as a “Top 50 Global Influencer in Risk, Compliance,” and by IFSEC as the “#2 Global Cybersecurity Influencer” in 2018, and one of “The Top 5 Tech People to Follow on LinkedIn”. He also was appointed as Special Assistant to the Director of Voice of America under President Reagan and featured Homeland Security contributor for Federal Times.

Social Authority Score: 70

190. John Bambenek

About: John Bambenek is an Artisanal Malware Curator, bug data wrangler, and the President and Chief Forensic Examiner of Bambenek Consulting. He has appeared as an expert in the New York Times, Washington Post and was once on the Daily Show with Jon Stewart.

Social Authority Score: 59

191. Martin McKeay

About: Martin McKeay is a Senior Security Advocate at Akamai. He is the author of the Network Security Blog and host of the Network Security Podcast. Martin is also an advocate of the Payment Card Industry Data Security Standard.

Social Authority Score: 40

192. CyberStu (Stuart Peck)

About: CyberStu is the host and Co-Founder of the widely popular Many Hats Club podcast. Stu heads up Cyber Security Strategy for ZeroDayLab and has over 13 years of experience in the information security industry.

Social Authority Score: 71

193. Tyler Cohen Wood

About: Tyler Cohen Wood is an internationally recognized cybersecurity authority with 20 years of experience. She has helped the White House, DoD, federal law enforcement and the intel community thwart many cyber threats to the USA.

Social Authority Score: 69

194. Amanda Berlin

About: Amanda *patched* Berlin is a highly accomplished network defender and Lead Incident Detection Engineer at Blumira. Amanda serves as the founder and CEO of Mental Health Hackers, and co-host of the Breaking Down Security podcast. She is the author of a Blue Team best practices book called “Defensive Security Handbook: Best Practices for Securing Infrastructure.”

Social Authority Score: 63

195. Mark Lynd

About: Mark Lynd is Head of Digital Business at Netsync is a top-ranked 20 global thought leader, author, speaker, and practitioner for, AI, Data Center IoT, and Cybersecurity. His notable keynotes include Intel, Cisco, Oracle, and IBM. His work has been featured in the WSJ, Information Week, eWeek, CRN, and CSO. Lynd is also a veteran that served honorably in the US Army’s 3rd Ranger Battalion & 82d Airborne.

Social Authority Score: 68

196. Camille François

About: Camille Francois studies how organized actors leverage digital technologies to harm society and individuals, from cyberwarfare to online harassment. She has investigated Russian interference in the 2016 Presidential election on behalf of the US Senate Select Intelligence Committee and served as a special advisor to the Chief Technology Officer of France. In 2019, Camille was recognized by the MIT Tech Review in its annual She was also named one of Time Magazine’s “100 Next” global leaders for her work on information operations.

Social Authority Score: 62

197. Byron Acohido

About: Byron Acohido is a Pulitzer Prize-winning journalist and the founder and executive editor of The Last Watchdog on Privacy & Security. He authored Zero Day Threat: The Shocking Truth of How Banks And Credit Bureaus Help Cyber Crooks Steal Your Money and Identity, a non-fiction thriller that received the 2009 NYSSCPA Excellence in Financial Journalism Award for general audience books.

Social Authority Score: 44

198. Nathaniel Gleicher

About: Nathaniel Gleicher is a computer scientist, lawyer, and the Head of Security Policy at Facebook. He has taught computer programming, built and secured computer networks, prosecuted cybercrime at the US Department of Justice, and served as Director for Cybersecurity Policy at the National Security Council (NSC) in the White House.

Social Authority Score: 66

199. Stephen Cobb

About: Stephen Cobb is a 25-year veteran of information security and data privacy and has been a CISSP since 1996. Stephen helped create several successful information security companies and is a frequent author and speaker on cyberthreats. He is a former SearchSecurity contributor and is currently senior security researcher for antivirus vendor ESET.

Social Authority Score: 65

200. Joshua Wright

About: Rogue hacker-turned-infosec-professional, Joshua Wright initially got into the infosec field after getting caught hacking, uncovering a vulnerability disclosure in the process. His infosec journey began in 1997 and currently serves as director and senior security analyst for CounterHack.

Social Authority Score: 54

About Perimeter 81

Perimeter 81 transforms network access and security and helps organizations of all sizes and in many industries to secure their remote workers. Named a Gartner Cool Vendor, Perimeter 81 is considered by industry leaders to be winning the “SASE space race”. Learn more about Perimeter 81 here: https://www.perimeter81.com/

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