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The Top 30 Cyber Security Experts You Need to Follow in 2021

October 12, 2021


Cyber security is changing and developing so rapidly that there’s no way any single person can keep track of it all. Luckily, there are numerous cyber security experts out there who can help you stay on top of everything that’s going on in the fieldall you have to do is follow them and you’re covered! Here are our picks for the top 30 cyber security experts you should be following in 2021.

1. Jeff Barr 

One of the most famous cyber security experts in the field, Jeff is a core member of the team that developed AWS. Now the VP and chief evangelist at AWS, he’s committed to continuing education from both sides of the desk. He blogs at the AWS blog and has an active Twitter feed.

2. Katie Moussouris

Katie Moussouris is a leading voice in the computer security world and an advocate for security research. In 2021, she uncovered and exposed a critical vulnerability in the popular app Clubhouse. She is the founder of Luta Security, formerly the Chief Policy Officer at HackerOne, and a former security strategist at Microsoft, where she created Microsoft’s Bug Bounty program. She shares her experience and speaks out about issues she’s passionate about through Twitter

3. David Linthicum

David Linthicum has been leading the cloud strategy industry since before most people were even aware that it existed. In his role as chief cloud strategy officer at Deloitte Consulting, he appears on a Deloitte podcast and has written more than 13 books and 5,000 articles. Not only that, he has appeared on TV and radio, and served as the CTO and CEO of various companies, and is a lecturer a Louisiana State University. Learn from his vast experience through his courses at Lynda.com, blog posts at InfoWorld, or on Twitter.

4. Runa Sandvik

Runa is a former developer at the TOR project. She currently runs the New York Times’ Information Security newsroom and is active in the Center for Investigative Journalism. She serves as technical advisor for the Freedom of the Press Foundation and the TrueCrypt Audit project and is on the board of the Norwegian Online News Association. Follow her on Twitter and read her blogs on Medium to learn about the convergence of tech, law, and policy. See 2020's cyber security expert list

5.Graham Cluley 

British cybersecurity expert Graham Cluley has been blogging, writing, tweeting, and podcasting against cybercrime since the 1990s and has won several prestigious awards for his work including The Legends of CyberSecurity – Grand Prix for best overall security blog and the Best Cybersecurity Podcast at EU Security Blogger Awards in 2019. Graham provides a wealth of expertise and industry news about malware and social media hoaxes on his Twitter feed, his personal blog, his Smashing Security podcast, and at cyber security conferences. 

6. Rachel Tobac

Rachel Tobac is an expert in social engineeringwhere the hacker takes on a fake identity to manipulate a target into exposing their information. Her company, SocialProof Security, trains companies how to keep their data safe and protect themselves against social engineering cyberattacks. She gives tons of information about the latest social engineering hacks and how to protect yourself from them on her Twitter feed. 

7. Tricia Howard

Tricia Howard leverages her artistic flair and background in theater to communicate security awareness and concepts at the end-user level. She doesn’t provide highly technical information—there’s enough of that out there. Instead, on her podcast, Coolest Nerds in the Room, her blog, Tricia kicks Saas, and her Twitter feed, Tricia breaks down cyber security concepts so that anyone can understand them.   

8. Tyler Cohen Wood

After gaining a wealth of experience developing highly technical cyber-solutions as a Senior Intelligence Officer with the Defense Intelligence Agency, Tyler Cohen Wood now leverages that expertise to help others.  She has consulted for the White House, DoD, federal law enforcement, and the intel community and is a frequent guest and writer for national and local media. Follow her on Twitter

9. Dr. Ant Allan

In his position as Vice President Analyst in Gartner Research, Dr. Allan is a key member of the Identity and Access Management (IAM) research community. He shares his expertise in user authentication and identity corroboration technologies, writing about processes, policies, and best practices in the field on Twitter

10. Marcus J. Carey

Launching his career as a Navy Cryptologist and then becoming a cyber security innovator and entrepreneur, Marcus J. Carey has over 20 years of experience in cyber security -  in penetration testing, incident response, and digital forensics. He focuses on creating cloud-based cyber security solutions that are low friction and highly effective and keeps the public up to date through his Twitter account

11. Theresa Payton

The first female to serve as White House Chief Information Officer, and star of the former CBS TV series, “Hunted”, Theresa Payton is one of the nation’s most famous cyber security experts, a lauded author, and an AI keynote speaker. She helps organizations improve IT systems and strategies and recover from data breaches.  Follow her Twitter account to get her updates on emerging trends and techniques to help combat cyber threats, from the impact of the Internet of Things to securing big data.

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12. Andras Cser 

Principal Analyst for Security & Risk Professionals at Forrester, Andras Cser covers cloud security and enterprise fraud management. He’s a leading expert on IAM and helps clients develop enterprise strategies for creating business value through identity management, cloud security, and fraud management. Keep up with what he’s doing via his Twitter feed

13. Mikko Hypponen

One of the most followed cyber security experts, Mikko was named Cybersecurity Person of the Year in 2020 by CISO magazine. When he’s not busy at his job as Chief Research Officer at F-Secure, he’s a prolific writer and international speaker, and consults for governments and other organizations. He’s got lots of helpful information to share on Twitter, Ted.com, and MikkoHypponen

14. Eva Galperin

Eva Galperin is one of the leaders in the intersection between cyber security and human rights, fighting to improve the digital security of vulnerable populations. Director of Cybersecurity at the Electronic Frontier Foundation and Technical Advisor to the Freedom of the Press Foundation, she has published research on APTs from Lebanon, Vietnam, Syria, and Kazakhstan, and is one of the founders of the Coalition Against Stalkerware. Follow her on Twitter or listen to her TED talk to learn more about global privacy and free speech. 

15. Kevin Mitnick

Kevin is a star pen tester and white-hat hacker, writing books and articles. He was even featured in a 2000 Miramax Film. As the Chief Hacking Officer of Know B4 he provides cybersecurity consulting services to governments and Fortune 500 companies, and helps companies train their staff on how to stop social engineering and other types of attacks before they happen. Follow him on Twitter--you’re sure to learn a lot.  

16. Andy Ellis

Advisory CISO at Orca Security, Operating Partner at YL Ventures and former CSO at Akamai, his CV is endless. Andy Ellis was the recipient of the 2021 CSO Hall of Fame award and the CSO Magazine Compass award for his efforts to “make the internet suck less.” He has designed many of Akamai’s security products, taking the platform from a flat password-based network to a leading Zero Trust eXtended Ecosystem Platform Provider. He shares his expertise on  Twitter and his blog, CSOAndy.com

See 2020's cyber security expert list

17. Dan Lohrmann

An internationally recognized and famous cyber security expert, keynote speaker, and author, Dan Lohrmann has worked in executive leadership capacities in a variety of global organizations in the private and public sectors. In his current role as the Chief Security Officer (CSO) and Chief Strategist for Security Mentor, Inc. he’s in charge of industry-leading cyber training, consulting, and workshops for end-users, managers, and executives. Get his insights on his Twitter feed. 

18. Magda Chelly

A Ph.D. in Telecommunication Engineering with a specialization in cybersecurity, and years of experience as a CISO combine to make Magda one of the most influential cyber security experts in the world. She is the founder of Women in Cyber, and travels the world supporting CISOs. Follow her on Twitter

19. Rusty Agee

Over 25 years of engineering, sales, and consulting have given Rusty Agee the ability to look at cybersecurity from the perspective of a customer, partner, vendor, and consultant. Follow his weekly “Bourbon and Breaches” posts for a light-hearted review of the week in cyber security and some tasty cocktail tips. 

20. Shira Rubinoff 

Shira is one of the most influential cyber security experts, focusing on the intersection of tech, psychology, and cybersecurity. She is the co-founder and president of Green Armor Solutions, president of SecureMySocial, and serves on the boards of numerous information security and tech forums. Follow her on Twitter to learn more about human-facing cyber security. 

21. Zack Whittaker

The former security editor for ZDNet.com, and current security editor at TechCrunch, Zack Publications that have cited him range from Wired to The New York Times and BBC News. Whittaker primarily covers cybersecurity and national security with a tech focus. Follow him on Twitter. 

22. Rafay Baloch

Rafay Baloch, known for his discovery of vulnerabilities on the Android operating system, is an ethical hacker and security researcher who has been featured in national and international media. Follow him on Twitter or read his blog to get his updates on technological innovations to combat cybercrime, critical Zero-Day security issues on web applications and browsers, and other topics related to privacy and security.  

23. Ashley McGlone

Ashley McGlone is passionate about advocating for customers and researching and creating vertical-specific guidance. Technology Strategist at Tanium and a former Microsoft Premier Field Engineer, he is a frequent conference speaker where people come both to hear what he has to say and to see his famous goatee.  He shares his insights on his Twitter feed.  

24. John Tolbert

Lead Analyst and Managing Director at KuppingerCole, Inc., he specializes in identity management and cybersecurity. John Tolbert has 15+ years of experience in cybersecurity. Follow him on Twitter or read his blog to learn more about mobile strong authentication, secure mobile software development, security SaaS and on-premise security architecture, and more. 

25. Ian Moyse

Ian Moyse is a leading tech social influencer and guest blogger for companies like Oracle, SAP, SAGE, HP, IBM, Huawei, Commvault, Equinix, Cloudtech. Maximiser. Miller Heiman and more. Recognized as a #1 social influencer on the cloud and #48 influencer on data security by Onalytica, you can follow him on Twitter here

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26. Sarah Cacchetti

The Principal Product Manager at AWS Identity, Sarah Cacchetti co-founded a professional organization for identity practitioners and was named one of the top 100 leaders in identity. She has co-written a book about digital identity, been a keynote speaker at industry conferences, and is frequently quoted as a cyber security expert in various media sources. Get her latest insights on Twitter. 

27. Richard Bell

Richard is a Fellow of The Security Institute (FSyI), a Member of the Association of Security Consultants, and a Registered Independent Security Consultant (RISC) who has been on the Global Top 40 List of Security Influencers twice. Formerly the Chief Information Security Officer (CISO) for Transport for London, he was responsible fo

r setting up TfL’s cyber and data security resiliency and cyber incident response capability. He is a frequent speaker at conferences and gives hands-on, practical advice on ‘all things security’ on Twitter

28. Katryna Dow

The founder of Meeco, an award-winning personal data platform, Katryna Dow advocates for digital rights and speaks about privacy, identity, data protection, and Me2B business models globally. In addition to her role with Meeco, she serves on two working groups for IEEE and provides info and data on her website and her Twitter feed. 

29. Brandon Phillips

Brandom Phillips is actively involved in the CoreOS Linux, etcd, Kubernetes, AppC & Open Container Initiative (OCI), and Container Networking Interface (CNI) communities. He was also a speaker at the National Cyber Summit. Find out what he’s doing in these areas by following him on Twitter.

30. Steve Turner 

Steve advises security and risk professionals about Zero Trust at Forrester, including network analysis and visibility, Zero Trust strategy and architecture, and the Zero Trust eXtended ecosystem. He has worked in multiple security/infrastructure architecture, engineering, and emerging technology roles within the Fortune 500 financial, energy, public, and managed services provider (MSP) sectors and has presented his learnings at several SANS summits. Gain from his expertise by reading his blog or following him on Twitter.

 

These 30 top cyber security experts can be your eyes and ears, alerting you to the most important news, trends, and insights in cybersecurity and information security. Following all or some of these industry leaders can be a key part of your continuing education and professional development, keeping you up to date with the critical developments in a fast-paced field. 

Get in touch with Marketing Envy for all your cybersecurity marketing needs.

PS: If you found this helpful, I'd really appreciate it if you can click here to share it on Twitter - besides helping my ego, it's just fun to get notifications 😉

P.P.S Be sure to check out past cyber security expert lists like this one

About the Author

Amit Lavi

CEO and Co-founder of Marketing Envy - A B2B tech and startup focused marketing agency based in Tel Aviv. Mentor at Google Campus and Microsoft Accelerator. Facebook and Google Alumni. Part of Google Experts Network

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