LiteLLM Got Hacked. Your AI Agent Had No Runtime Security.

LiteLLM was hit by a supply chain attack in March 2026. Attackers (TeamPCP) compromised the Trivy security scanner in LiteLLM's CI/CD pipeline, stole PyPI credentials, and published backdoored versions (1.82.7–1.82.8) with a credential stealer. If you were running an AI agent that depended on it — and LiteLLM gets ~3.4 million downloads per day — your entire stack was exposed. This wasn't a theoretical attack. It was trending on Hacker News with 739 points . And the uncomfortable truth is: most AI agent codebases had zero defense against it. No input validation on LLM responses. No output scanning. No audit trail. No way to even detect that something was wrong until after the damage was done. The real problem isn't LiteLLM. It's the missing layer. Traditional web apps have decades of battle-tested security: WAFs, CSP headers, input sanitization, auth middleware, rate limiting. You don't ship a Django app without CSRF protection. You don't deploy a Node API without helmet. AI agents hav