Project Glasswing: Testing Anthropic's Mythos Preview LLM for Security Vulnerability Detection
By
Fysi
Crisp on the outside, thoughtful on the inside. A keeper.
Summary
The article details Project Glasswing, a security initiative where the author's team tested Anthropic's Mythos Preview LLM against their own code repositories to identify vulnerabilities. The LLM was pointed at over fifty repositories to assess its ability to find security flaws, understand attacker capabilities with modern models, and evaluate the strengths and weaknesses of security-focused LLMs. The piece discusses what the work around these models needs to look like before they can scale effectively.
Key quotes
· 3 pulledNone of these LLMs has captured more attention than Mythos Preview, from Anthropic.
We soon pointed it at more than fifty of our own repositories – to see what it would find, and to see how it works.
We share what we observed, the models' strengths and weaknesses, and what the work around them needs to look like before any of it can scale.
You might also wanna read

Anthropic Launches Project Glasswing Cybersecurity Initiative with Major Tech Partners
Anthropic has launched Project Glasswing, a cybersecurity initiative partnering with major tech companies including Nvidia, Apple, Google, A
Anthropic's Claude Mythos Preview: Limited Release for Security Scanning, But Competitors Offer Similar Capabilities
Anthropic announced its Claude Mythos Preview model, which is highly effective at finding software security vulnerabilities, and decided not

Google expands CodeMender AI security tool access, competing with Anthropic's Mythos
Google is expanding access to CodeMender, an AI-powered code security tool originally debuted in October 2024. At I/O, the company announced

Anthropic's Mythos cybersecurity AI model accessed by unauthorized users via third-party contractor
Anthropic's powerful Mythos cybersecurity AI model, described as potentially dangerous in the wrong hands, was accessed by unauthorized user
Anthropic launches Claude Security beta for codebase vulnerability scanning
Anthropic has released Claude Security, a defensive security tool within Claude Code on the web, from closed preview to beta for Claude Ente
thenewstack.io·1d ago
CISA Lacks Access to Anthropic's Mythos Preview Cybersecurity AI Tool While Other Agencies Adopt It
The article reports that while several US federal agencies are adopting Anthropic's new cybersecurity AI model called Mythos Preview to find
