For decades, zero-day vulnerabilities were the cyber equivalent of secret weapons — only nation-states and elite attackers could find and weaponize them.

That balance may be gone.

On April 7, 2026, Anthropic announced Claude Mythos Preview — an AI model so capable of finding and exploiting vulnerabilities that the company decided it’s too dangerous to release publicly.

What it can do: Mythos has already found thousands of high-severity zero-days across every major OS and browser. It autonomously chained four vulnerabilities into a working browser exploit. It found a 27-year-old OpenBSD flaw for ~$50 in compute.

The gap is staggering: Claude Opus 4.6 developed working Firefox exploits 2 times out of hundreds of attempts. Mythos: 181 times. That’s a ~90x improvement in autonomous exploit development.

Project Glasswing: Anthropic formed a $100M coalition — Microsoft, AWS, Apple, Google, Cisco, NVIDIA, CrowdStrike, and others — giving them early access to Mythos to patch vulnerabilities before adversaries find them. The model stays restricted.

The bottom line: AI may soon remove the biggest barrier to cyberattacks — the expertise needed to find flaws. When that barrier falls, exploits could grow exponentially.

Stay sharp. Stay secure. This is human generated content.

https://www.anthropic.com/glasswing

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The post Saturday Security: AI Could Trigger a Zero-Day Exploit Tsunami appeared first on psilva's prophecies.

*** This is a Security Bloggers Network syndicated blog from psilva's prophecies authored by psilva. Read the original post at: https://psilvas.wordpress.com/2026/04/11/saturday-security-ai-could-trigger-a-zero-day-exploit-tsunami/