Summary
Certain individuals are consistently recognized as leading figures due to their long-term contributions, thought leadership, and widespread impact on the field.
Below are 25 highly regarded cybersecurity experts across different specializations.
From Gemini AI Deep Dive Overview – 10/20/2025
OnAir Post: Cyber Experts
About
From top consulting firms
- Rex Thexton: Senior Managing Director at Accenture, specializing in digital identity and access management.
- Ida Kristensen: Senior Partner and Cybersecurity practice leader at McKinsey and Company.
- Emily Mossburg: Global Cyber Leader at Deloitte.
- Nicole Koopman: Managing Director at EY, leading the Cyber Alliance Ecosystem.
- Sean Joyce: Global Cybersecurity and Privacy Leader at PwC.
- Robert Olsen: Senior Managing Director and Global Head of Cybersecurity and Privacy at Ankura Consulting.
- Andrew Turner: Executive Vice President leading Global Commercial business at Booz Allen Hamilton.
Influential researchers and thought leaders
These experts are widely recognized for their influence and contributions to research, journalism, and public speaking.
8. Brian Krebs: An investigative journalist and author of the popular blog Krebs on Security, known for his in-depth reporting on cybercrime.
9. Troy Hunt: The creator of “Have I Been Pwned,” a widely used data breach notification service. He is also a privacy and security expert and speaker.
10. Bruce Schneier: A renowned security expert, author, and cryptographer who has written several books and maintains a popular blog on the topic.
11. Mikko Hyppönen: Chief Research Officer at WithSecure, an expert in malware research, and a respected speaker in the cybersecurity community.
12. Chuck Brooks: A consultant, educator, and thought leader with extensive experience in cybersecurity and emerging technologies. He has received numerous awards and is a top cybersecurity expert to follow on social media.
13. Graham Cluley: An award-winning security blogger, researcher, and public speaker.
14. Katie Moussouris: Founder of Luta Security and a pioneer in vulnerability disclosure and bug bounty programs.
15. Daniel Miessler: The founder of Unsupervised Learning, a platform that provides insight into technology and security trends.
16. Keren Elazari: An ethical hacker and TED speaker who is a well-known voice in the cybersecurity community.
17. Shira Rubinoff: An IT security consultant and blockchain expert, recognized as a top cybersecurity influencer.
Journalists and authors
Specialized and diverse leaders
This group includes leaders with specialized expertise in different cybersecurity domains.
21. Frank Abagnale: A security expert and fraud prevention icon, whose story was portrayed in the film Catch Me If You Can.
22. Magda Chelly: An information security officer and co-founder of a cybersecurity startup, recognized as a top influential cybersecurity personality.
23. Jane Frankland: An expert on attracting and retaining women in cybersecurity, and the author of Insecurity.
24. Andrew Borene: Executive Director at Flashpoint, with expertise in national security and intelligence. He previously held leadership roles at IBM and Symantec.
25. Alissa Knight: An ethical hacker, security researcher, and author, recognized for her work in the cyber community.
