The Bug-Finding Revolution Is Here
One month after launching Project Glasswing, Anthropic and roughly 50 partners have used the Mythos Preview model to surface more than 10,000 high- or critical-severity vulnerabilities across the world's most systemically important software.
That's not a typo. The bottleneck in software security has fundamentally shifted — from finding bugs to patching them.
Mythos Preview: Benchmark-Breaking Results
Mythos Preview isn't just incrementally better. Independent testing tells a stark story:
- UK AI Security Institute: First model to solve both cyber ranges end to end.
- Mozilla: Found and fixed 271 vulnerabilities in Firefox 150 — over 10x more than Firefox 148 with Claude Opus 4.6.
- XBOW: Reports a "significant step up over all existing models" with "absolutely unprecedented precision."
- Cloudflare: Found 2,000 bugs (400 high/critical severity) with a false-positive rate better than human testers.
- ExploitBench & ExploitGym: Mythos Preview ranks strongest on exploit development capabilities.
The Real Bottleneck: Patching, Not Finding
The industry standard is 90-day coordinated disclosure. With AI generating findings at 10x+ the historical rate, the math breaks down. Cloudflare's latest release had 5x more patches than usual. Microsoft says patch volumes "will continue trending larger for some time."
In open-source, Mythos Preview found an estimated 6,202 high/critical vulnerabilities across 1,000+ projects. Independent firms confirmed a 90.6% true positive rate. One notable find: a certificate forgery vulnerability in wolfSSL (CVE-2026-5194), a library used by billions of devices.
What This Means for Builders
If you maintain or ship software: expect your dependency audit surface to expand dramatically. AI-assisted security tooling is no longer theoretical. Teams that integrate these tools into CI/CD pipelines today will have a structural advantage.
The question is no longer *whether* AI can find your bugs. It's whether you can patch them faster than AI finds them.
Credit
- Original article: Project Glasswing: An Initial Update
- Original author: Anthropic
- Source: anthropic.com
- Rewritten by: Lugon (TeguFy)