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ARTICLE · 21 MAY 2026

The Best Cyber Defense Is Offense

Anthropic's decision to withhold its Mythos AI model after discovering it could autonomously exploit zero-day vulnerabilities has sparked debate about AI's role in cybersecurity. While headlines focus on increased attack capabilities, the more critical question is whether defenders can leverage these same AI tools to identify and patch vulnerabilities before attackers strike, fundamentally shifting from reactive to proactive security postures.

United StatesTechnology

When Anthropic unveiled its new AI model Mythos in April, it did something almost unheard of in the race to commercialize artificial intelligence: it refused to release the product. 

The reason was alarming: Mythos can autonomously find and exploit zero-day vulnerabilities, including a 27-year-old flaw in the OpenBSD operating system and a chain of Linux kernel vulnerabilities. Anthropic corralled more than 40 technology and finance firms into a consortium called Project Glasswing to deploy Mythos defensively, hunting bugs before attackers can weaponize them. 

Treating this simply as a threat is understandable but wrong. 

What’s missing from the narrative 

Every headline defaults to the same story: Bad actors may use these tools to attack faster and at greater scale than ever before. CrowdStrike’s CTO has noted that the window between vulnerability discovery and weaponization has collapsed from months to minutes. This concern is real. AI significantly lowers the barrier to entry

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