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Your AI Gateway Was a Backdoor: Inside the LiteLLM Supply Chain Compromise

March 26, 2026 · Trend Micro · Severity: HIGH

TeamPCP orchestrated one of the most sophisticated multi-ecosystem supply chain campaigns publicly documented to date. It cascaded through developer tooling and compromised LiteLLM and exposed how AI proxy services that concentrate API keys and cloud credentials become high-value collateral when supply chain attacks compromise upstream dependencies.

Key Takeaways

  • TeamPCP orchestrated one of the most sophisticated multi-ecosystem supply chain campaigns publicly documented, cascading through developer tooling.
  • The campaign compromised LiteLLM, exposing how AI proxy services that concentrate API keys and cloud credentials become high-value targets.
  • Organizations running AI gateways should treat them as crown jewels, monitor for supply chain tampering, and rotate exposed credentials.
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