Eugene Yan • 5/27/2026

Using LLMs to Secure Source Code

This article provides a comprehensive guide on using LLMs, specifically Claude Opus, to secure source code. It outlines a six-step 'find-and-fix loop' including threat modeling, sandboxing, vulnerability discovery, verification, triage, and patching. The author notes that discovery is now easy to parallelize, but the bottleneck has shifted to verification and patching. Practical advice is given for security teams to scale their efforts, with an accompanying repo for interactive workflows and autonomous scanning. The content is focused on IT/technology, specifically software security and AI applications.

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#llm security #Threat Modeling #Source Code