Introducing deepsec: The security harness for finding vulnerabilities in your codebase

Introduces Deepsec, an open-source security harness that uses coding agents and LLMs (Claude, Codex) to find vulnerabilities in codebases. It details the architecture involving static analysis, agent investigation, revalidation, and enrichment. The post highlights its ability to run on user infrastructure or scale with Vercel Sandboxes, its customization via plugins, and its effectiveness in identifying security-sensitive areas and potential issues, including edge cases in authentication. It also discusses false positive rates and best use cases.