# Top Influencers & Voices in Cybersecurity

Creators, analysts, and practitioners with substantial audiences on LinkedIn, X, YouTube, newsletters, and podcasts. Every entry has 10,000+ followers and a consistent cybersecurity focus.

40 curated entries.

- [Rachel Tobac](https://gracker.ai/cyber-resources/influencers/rachel-tobac): Rachel Tobac is a hacker, social engineer, and CEO of SocialProof Security. One of cybersecurity's most visible voices with a large following on LinkedIn and X.
- [Troy Hunt](https://gracker.ai/cyber-resources/influencers/troy-hunt): Troy Hunt is the creator of Have I Been Pwned and one of the most cited voices in consumer cybersecurity and breach reporting.
- [Mikko Hyppönen](https://gracker.ai/cyber-resources/influencers/mikko-hypponen): Mikko Hyppönen is one of cybersecurity's most recognizable faces globally, with decades of malware research and a reputation as a world-class keynote speaker.
- [Bruce Schneier](https://gracker.ai/cyber-resources/influencers/bruce-schneier): Bruce Schneier is a cryptographer, computer security professional and best-selling author who has been shaping public thinking on security, privacy and power for three decades. His blog Schneier on Security and newsletter Crypto-Gram reach more than 250,000 readers.
- [Brian Krebs](https://gracker.ai/cyber-resources/influencers/brian-krebs): Brian Krebs is an independent investigative reporter and author of KrebsOnSecurity.com, the award-winning cybersecurity news site he founded in 2009 after leaving The Washington Post.
- [Graham Cluley](https://gracker.ai/cyber-resources/influencers/graham-cluley): Graham Cluley is an award-winning cybersecurity veteran, blogger and keynote speaker. He co-hosts the multi-award-winning 'Smashing Security' podcast and the newer 'The AI Fix' podcast, which has surpassed 10 million downloads.
- [Daniel Miessler](https://gracker.ai/cyber-resources/influencers/daniel-miessler): Daniel Miessler is the founder of Unsupervised Learning, a newsletter, podcast and community focused on the intersection of cybersecurity, AI, national security, technology and culture.
- [Lesley Carhart](https://gracker.ai/cyber-resources/influencers/lesley-carhart): Lesley Carhart (@hacks4pancakes) is a widely followed incident response leader focused on industrial control systems and OT security. They are Director of Incident Response for North America at Dragos.
- [Dave Kennedy](https://gracker.ai/cyber-resources/influencers/dave-kennedy): Dave Kennedy is the founder of TrustedSec, an information security consulting firm, and Binary Defense, a managed detection and response provider. He is a former CSO of Diebold and has testified before U.S. Congress on cyber threats.
- [Tanya Janca](https://gracker.ai/cyber-resources/influencers/tanya-janca): Tanya Janca, aka SheHacksPurple, is a best-selling author and application security educator who has trained thousands of developers and security professionals on secure coding and application security.
- [Katie Moussouris](https://gracker.ai/cyber-resources/influencers/katie-moussouris): Katie Moussouris is founder and CEO of Luta Security, a consultancy focused on vulnerability coordination, bug bounty program design and security maturity.
- [Jake Williams](https://gracker.ai/cyber-resources/influencers/jake-williams): Jake Williams (MalwareJake) is a well-known offensive security practitioner and educator. He is VP of R&D at Hunter Strategy, an IANS Faculty Member, and an independent security consultant focused on AI/ML and cybersecurity.
- [John Strand](https://gracker.ai/cyber-resources/influencers/john-strand): John Strand is founder of Black Hills Information Security and Active Countermeasures. He is a senior SANS instructor and widely regarded mentor in the offensive and defensive security communities.
- [Eva Galperin](https://gracker.ai/cyber-resources/influencers/eva-galperin): Eva Galperin is Director of Cybersecurity at the Electronic Frontier Foundation, focusing on privacy and security for vulnerable populations, including journalists, activists and survivors of domestic abuse.
- [Deepak Gupta](https://gracker.ai/cyber-resources/influencers/deepak-gupta): Deepak Gupta is a cybersecurity author and researcher who publishes at guptadeepak.com on identity, AI/LLM security, and Generative Engine Optimization (GEO), holds 5 patents spanning DDoS defense, IoT authentication, and searchable encryption, and has bylines in Forbes, Entrepreneur, VentureBeat, and Fast Company.
- [Kim Zetter](https://gracker.ai/cyber-resources/influencers/kim-zetter): Kim Zetter is an award-winning independent investigative journalist who has covered cybersecurity and national security since 1999. She publishes the Zero Day newsletter, focused on espionage, surveillance and the intersection of cyber and national security.
- [John Hammond](https://gracker.ai/cyber-resources/influencers/john-hammond): John Hammond is a security researcher at Huntress and one of the most-watched cybersecurity educators on YouTube, with a large audience for his live malware analysis, exploitation, and CTF walkthroughs.
- [Eugene Kaspersky](https://gracker.ai/cyber-resources/influencers/eugene-kaspersky): Eugene Kaspersky is the co-founder and CEO of Kaspersky, one of the world's best-known consumer and enterprise security brands, and a widely followed voice on global malware research.
- [Jason Haddix](https://gracker.ai/cyber-resources/influencers/jason-haddix): Jason Haddix is the CEO of Arcanum Information Security and one of the most influential figures in bug bounty and offensive security, whose recon and web-hacking methodology shaped a generation of bug hunters.
- [Jeff Moss](https://gracker.ai/cyber-resources/influencers/jeff-moss): Jeff Moss, known as The Dark Tangent, founded DEF CON and Black Hat, the two most influential hacker and security conferences in the world, and is a long-standing voice in hacker culture and security policy.
- [Alex Stamos](https://gracker.ai/cyber-resources/influencers/alex-stamos): Alex Stamos is CISO at SentinelOne and a lecturer at Stanford. The former CSO of Facebook and Yahoo is a leading public voice on platform security, disinformation, and secure-by-design.
- [Nicole Perlroth](https://gracker.ai/cyber-resources/influencers/nicole-perlroth): Nicole Perlroth is a bestselling author and former lead cybersecurity reporter at The New York Times, known for her reporting on the global zero-day arms race. She is now a venture partner and startup advisor.
- [Robert M. Lee](https://gracker.ai/cyber-resources/influencers/robert-m-lee): Robert M. Lee is co-founder and CEO of Dragos, the dominant pure-play in industrial control systems and OT cybersecurity, and one of the most cited voices on protecting critical infrastructure.
- [Katie Nickels](https://gracker.ai/cyber-resources/influencers/katie-nickels): Katie Nickels is Director of Intelligence at Red Canary and a SANS Certified Instructor, and one of the most accessible educators in cyber threat intelligence and MITRE ATT&CK-aligned detection.
- [Heath Adams](https://gracker.ai/cyber-resources/influencers/heath-adams): Heath Adams, known as The Cyber Mentor, is one of the most popular ethical-hacking educators online, who founded and scaled TCM Security and created the practical PNPT certification.
- [Anton Chuvakin](https://gracker.ai/cyber-resources/influencers/anton-chuvakin): Dr. Anton Chuvakin is a security advisor in Google Cloud's Office of the CISO and a longtime authority on SIEM, logging, and security operations, widely read for his analysis on modernizing the SOC.
- [Kelly Shortridge](https://gracker.ai/cyber-resources/influencers/kelly-shortridge): Kelly Shortridge is the author of 'Security Chaos Engineering' and a leading thinker on applying resilience engineering and behavioral economics to security. She is Chief Product Officer at Fastly.
- [Keren Elazari](https://gracker.ai/cyber-resources/influencers/keren-elazari): Keren Elazari is an internationally renowned security researcher and speaker whose TED talk on hackers has been viewed by millions. She founded BSidesTLV and the Leading Cyber Ladies network.
- [Theresa Payton](https://gracker.ai/cyber-resources/influencers/theresa-payton): Theresa Payton is the founder and CEO of cybersecurity firm Fortalice Solutions and the first female White House CIO. She is a frequent media commentator and author on cyber threats, privacy, and disinformation.
- [Jessica Barker](https://gracker.ai/cyber-resources/influencers/jessica-barker): Dr. Jessica Barker MBE is a leading authority on the human side of cybersecurity (culture, awareness, and behavior) and co-leads Cygenta. She is the bestselling author of 'Confident Cyber Security' and 'Hacked'.
- [Javvad Malik](https://gracker.ai/cyber-resources/influencers/javvad-malik): Javvad Malik is a security awareness advocate at KnowBe4 known for entertaining, accessible cybersecurity content across video, blog, and stage, and a longtime industry storyteller.
- [Magda Chelly](https://gracker.ai/cyber-resources/influencers/magda-chelly): Dr. Magda Chelly is the co-founder and Managing Director of Responsible Cyber, a TEDx speaker, author, and one of APAC's most prominent advocates for diversity in cybersecurity.
- [Rinki Sethi](https://gracker.ai/cyber-resources/influencers/rinki-sethi): Rinki Sethi is a veteran security leader and CSO at Upwind Security who has run security programs at Twitter, BILL, Rubrik, Walmart, IBM, and Palo Alto Networks, and is a sought-after board director and early-stage investor.
- [Raj Samani](https://gracker.ai/cyber-resources/influencers/raj-samani): Raj Samani is SVP and Chief Scientist at Rapid7 and a 25-year industry veteran who leads threat research, producing widely cited threat-landscape and ransomware reports.
- [Ed Skoudis](https://gracker.ai/cyber-resources/influencers/ed-skoudis): Ed Skoudis is President of the SANS Technology Institute and the founder of the SANS Penetration Testing curriculum, NetWars, and the Holiday Hack Challenge, having trained tens of thousands of professionals.
- [Window Snyder](https://gracker.ai/cyber-resources/influencers/window-snyder): Window Snyder is the founder and CEO of device-security startup Thistle Technologies and a veteran security leader who held senior roles at Apple, Square, Fastly, Intel, and Mozilla.
- [Sivan Tehila](https://gracker.ai/cyber-resources/influencers/sivan-tehila): Sivan Tehila is the founder and CEO of Onyxia Cyber, an AI-driven cybersecurity performance-management platform for CISOs, and a cybersecurity professor and women-in-cyber advocate.
- [Shira Rubinoff](https://gracker.ai/cyber-resources/influencers/shira-rubinoff): Shira Rubinoff is a cybersecurity executive, analyst, and author of 'Cyber Minds', widely cited as one of the top female cybersecurity social-media influencers and a frequent keynote speaker.
- [Richard Stiennon](https://gracker.ai/cyber-resources/influencers/richard-stiennon): Richard Stiennon is the founder and chief research analyst of IT-Harvest, which tracks thousands of cybersecurity vendors, and the author of ten books on the security industry.
- [Robert Herjavec](https://gracker.ai/cyber-resources/influencers/robert-herjavec): Robert Herjavec founded Herjavec Group (now Cyderes), one of the world's largest managed security services providers, and is known to mainstream audiences as a longtime investor on ABC's Shark Tank.

## Frequently Asked Questions

### Who counts as a cybersecurity influencer in this directory?

Creators, analysts, and practitioners with 10,000+ followers on LinkedIn, X, YouTube, or a newsletter, and a consistent, ongoing cybersecurity focus, not one-off viral posts.

### How do vendors use this list?

Marketers use it to source briefing candidates, podcast guests, sponsored content partners, and analyst-style commentary for launches, sorted by platform and audience size.