Ep 141: AI Hackers Are Here; Cybersecurity Legend Kevin Mandia Is Building the Answer

Joe Lonsdale: American Optimist

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Ep 141: AI Hackers Are Here; Cybersecurity Legend Kevin Mandia Is Building the Answer

Joe Lonsdale

Feb 04, 2026

When Kevin Mandia’s phone rings, it’s often a Fortune 500 CEO or government leader with a billion-dollar problem. How did he become the go-to expert in cybersecurity? What new threats from AI led him back into the arena? And what is he building to protect the good guys?

Kevin began his career in the U.S. Air Force, defending the U.S. military from some of the earliest cyber attacks. He went on to found and lead Mandiant, scaling it into an industry leader which Google acquired in 2022 for over $5 billion. In 2013, he famously exposed China’s massive state-sponsored cyber espionage inside America. Kevin has also served on the National Security Telecommunications Advisory Committee (NSTAC) and the CISA Cybersecurity Advisory Committee. He recently launched Armadin to address new AI possibilities in the cyber domain.

To begin, Kevin takes us behind the scenes of the early cyber skirmishes in the 1990s, and what it was like confronting some of the first cyber incursions from Russia and China, as well as the rise of criminal cyber enterprises. In the early 2000s, Kevin noticed glaring gaps in conventional antivirus approaches and launched Mandiant. Learn how he quickly became the first person that CEOs and governments would call if they’d been hacked. After scaling Mandiant and exiting to Google, Kevin is now back in the arena building cutting-edge solutions to new AI cyber threats. He explains the dramatic increase in the productivity and sophistication of AI agents, and why it’s upending how we build cyber defenses. Find out what he’s most worried about in 2026, and what steps governments and CEOs need to take to secure their networks and infrastructure.