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Top 20 Cybersecurity Influencers in the US in 2025
The United States is home to some of the most influential cybersecurity experts. This list features the top influencers of 2025 who are shaping the future of online security through education, advocacy, and cutting-edge insights.

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Josie Renna is a content strategy expert with a passion for helping creators navigate the ever-evolving digital landscape. Specializing in effective content creation techniques and platform-specific strategies, Josie provides insights to empower creators and brands to thrive online. With a deep understanding of algorithm dynamics and audience engagement, Josie shares actionable tips for optimizing content performance across various platforms.
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Here’s the list of the Top 20 Cybersecurity Influencers in the US in 2025:

20. Gerald Auger, Ph.D.
Gerald Auger, Ph.D., is a prominent figure in the cybersecurity field, focusing on career development and education. He shares practical knowledge through various platforms, including YouTube and LinkedIn, where he engages with a community of aspiring cybersecurity professionals. His content emphasizes hands-on skills, GRC (Governance, Risk, Compliance) training, and the importance of networking. Auger is also known for his daily cyber threat briefings and community-building efforts within the cybersecurity space.
Favikon Authority Score: 7 851 pts

19. Mike Holcomb
Mike Holcomb is a cybersecurity expert specializing in Industrial Control Systems (ICS) and Operational Technology (OT). He is a Fellow of Cybersecurity and the ICS/OT Cybersecurity Global Lead for Fluor, focusing on securing critical infrastructure. He offers free resources and courses on ICS/OT cybersecurity, actively engages with the community, and has a strong presence on LinkedIn and YouTube. His content emphasizes practical knowledge, risk management, and the importance of cybersecurity in protecting physical systems.
Favikon Authority Score: 7 877 pts

18. Rachel Tobac
Rachel Tobac is a cybersecurity expert and CEO of SocialProof Security, specializing in security awareness and social engineering prevention. She is known for her engaging training videos and live demonstrations, including her work at DEF CON. Rachel has served on the CISA Technical Advisory Council and is an advocate for women in tech, chairing the Board for Women in Security and Privacy (WISP). Her insights on hacking and security have been featured in major media outlets, making her a prominent voice in the cybersecurity community.
Favikon Authority Score: 7 960 pts

17. Dr. Eric Cole
Dr. Eric Cole is a prominent cybersecurity expert with over 20 years of experience. He is the founder and CEO of Secure Anchor Consulting, focusing on preventing security breaches and responding to advanced threats. An author of eight books and a keynote speaker, he emphasizes personal growth, resilience, and proactive health management in his social media content. His posts often blend motivational themes with cybersecurity insights, aiming to empower individuals and organizations to enhance their security posture.
Favikon Authority Score: 8 010 pts

16. Brian Krebs
Brian Krebs is an independent investigative journalist specializing in internet security and cybercrime. He is the author of the NYT bestseller 'Spam Nation' and maintains a daily blog, KrebsOnSecurity.com, where he covers computer security issues, cybercrime, and the underground economy. His work aims to make complex security topics accessible and engaging for readers, often highlighting significant breaches and vulnerabilities in major companies and government systems.
Favikon Authority Score: 8 079 pts

15. Tib3rius
Tib3rius is a cybersecurity educator and content creator specializing in web application hacking. He shares insights on penetration testing, cybersecurity tools, and educational content through various platforms, including Twitch and YouTube. With a background in network penetration testing and a passion for teaching, he engages with his audience through informative posts and interactive content. His expertise is highlighted by his OSCP certification and contributions to cybersecurity standards.
Favikon Authority Score: 8 082 pts

14. Matthew Prince
Matthew Prince is the co-founder and CEO of Cloudflare, a leading internet security and performance company. He shares insights on technology, entrepreneurship, and internet governance, often discussing AI efficiency and cybersecurity. His posts reflect a blend of personal experiences and professional updates, showcasing his expertise in tech and business. He is also engaged in discussions about societal issues, including urban development and internet neutrality.
Favikon Authority Score: 8 092 pts

13. Tyler Ramsbey
Tyler Ramsbey is a Penetration Tester and Content Creator with a focus on offensive security. He is an Offensive Security Certified Professional (OSCP) and Certified Cloud Security Professional (CCSP), passionate about sharing knowledge through free resources. As the founder of the 'Hack Smarter' IT Community, he provides career guidance and training. His YouTube channel features over 400 videos on cybersecurity, with a strong emphasis on practical skills and community support. He actively engages in discussions about ethical hacking and promotes accessible education in the field.
Favikon Authority Score: 8 137 pts

12. Kevin Apolinario
Kevin Apolinario is an IT professional and technical trainer specializing in cybersecurity and IT support. He shares educational content on his YouTube channel, helping over 28,000 individuals secure IT roles. With extensive experience in customer service and technical support, he emphasizes the importance of networking and continuous learning in tech. He actively engages with his audience through various platforms, offering free study sessions and resources for certifications like CompTIA Security+.
Favikon Authority Score: 8 162 pts

11. Jen Easterly
Jen Easterly is a prominent cybersecurity and national security leader, recognized for her expertise in cyber threats and organizational resilience. She served as the Director of CISA, leading efforts to protect critical infrastructure. A combat veteran and former Wall Street executive, she emphasizes mental health awareness and advocates for women in cybersecurity. Her social media presence includes sharing personal stories, professional insights, and promoting initiatives like election security and mental health advocacy.
Favikon Authority Score: 8 176 pts
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10. Rob Braxman
Rob Braxman is a public interest technologist and cybersecurity expert focused on internet privacy and digital security. He educates his audience on the dangers of mass surveillance, data mining, and the implications of emerging technologies like AI. As a licensed HAM radio operator, he also discusses alternative communication methods. His content spans various platforms, including YouTube and Twitter, where he shares insights on privacy tools and strategies to evade digital surveillance.
Favikon Authority Score: 8 209 pts

9. Heath Adams
Heath Adams is a cybersecurity expert and educator, known for his work in ethical hacking and penetration testing. He is the founder of TCM Security and offers a range of online courses aimed at bridging the cybersecurity education gap. His content focuses on practical skills, including hands-on training in various cybersecurity domains. Heath actively engages with his audience through YouTube, LinkedIn, and other platforms, sharing insights and resources to empower aspiring cybersecurity professionals.
Favikon Authority Score: 8 250 pts

8. Mike Miller
Mike Miller is a seasoned Cyber Security professional with over 25 years of experience. He serves as a vCISO and Senior Security Consultant, focusing on mentoring aspiring cyber professionals. His content emphasizes career guidance, practical skills, and industry insights, particularly in Governance, Risk, and Compliance (GRC) and penetration testing. He actively engages with his audience through weekly emails and social media posts, providing resources and advice for breaking into the cyber security field.
Favikon Authority Score: 8 252 pts

7. Leo
Leo is a cybersecurity expert and the owner of The PC Security Channel, which focuses on malware analysis, antivirus testing, and educational content about online security. He offers in-depth reviews, threat demonstrations, and tutorials designed to enhance cybersecurity awareness. Engaging with a community on Discord, Leo emphasizes practical cybersecurity solutions for both individuals and businesses, showcasing a commitment to improving digital safety.
Favikon Authority Score: 8 356 pts

6. Matt Johansen
Matt Johansen is a cybersecurity expert and the Head of Software Security at Reddit. He focuses on securing the internet and educating organizations on cybersecurity best practices. He runs a cybersecurity media brand, Vulnerable U, which includes a popular newsletter and social media content. His posts cover current events in infosec, app security, and cloud security, often highlighting vulnerabilities and security threats. He engages with a community of over 20k professionals through his newsletter.
Favikon Authority Score: 8 361 pts

5. Joseph Steinberg
Joseph Steinberg is a prominent cybersecurity expert, author, and lecturer at Columbia University. He has over 25 years of experience in the cybersecurity field, serving as a board member and advisor to various organizations. Steinberg is known for his insights on cybersecurity, AI, and technology's societal impacts, with a significant online presence and a popular column. He actively engages in discussions about cyber risks, privacy, and geopolitical issues, particularly in relation to Israel and Palestine.
Favikon Authority Score: 8 539 pts

4. John Hammond
John Hammond is a cybersecurity researcher and educator, known for his engaging content on ethical hacking and cybersecurity education. He works with Huntress Labs and has a background in teaching at the Department of Defense Cyber Training Academy. His social media presence includes programming tutorials, CTF walkthroughs, and insights into cybersecurity threats. He actively promotes free training resources and participates in security conferences, making him a prominent figure in the cybersecurity community.
Favikon Authority Score: 8 654 pts

3. Low Level
A senior security engineer and hacker, Low Level creates engaging content focused on cybersecurity and software security. He shares insights through videos and live streams, covering topics like vulnerabilities, coding, and hacking techniques. His educational approach includes promoting coding courses and a CTF platform, appealing to tech enthusiasts and aspiring hackers. With a strong presence on YouTube and Twitch, he fosters a community interested in cybersecurity trends and practices.
Favikon Authority Score: 8 671 pts

2. Ryan M. Montgomery
Ryan M. Montgomery is a serial entrepreneur and child safety advocate with a focus on cybersecurity. He is the founder of Digital G Investments and co-founder of Pentester.com, leveraging over 19 years of experience in business development and strategic planning. His content emphasizes online safety for children, addressing digital threats and educating parents on protecting their kids in the digital landscape. He actively shares insights on hacking techniques and digital security measures across various social media platforms.
Favikon Authority Score: 8 695 pts

1. Caitlin Sarian
A cybersecurity advocate focused on online safety and data privacy. She shares tips on deleting personal data from the internet and empowers women to enter STEM fields. Her content includes explanations of cybersecurity incidents and practical advice for protecting personal information. She actively promotes the Cyber Career Club, aiming to increase female representation in technology.
Favikon Authority Score: 8 875 pts
Also See 👀
🏆 TOP 20 CYBERSECURITY EXPERTS
🏆 TOP 200 CYBERSECURITY INFLUENCERS IN THE US
HOW DOES FAVIKON RANK INFLUENCERS?
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