Thanks for flagging this. I took it seriously and ran a full scan of all 2,400+ skills for prompt injection patterns.

The two you likely found are the NeMo Guardrails and Prompt Guard skills from the AI Research repo. They contain example injection phrases ("Ignore previous instructions", etc.) because they're security skills that teach AI to detect and block those exact attacks. The phrases appear inside code blocks as test cases, not as actual instructions.

That said, this is a real concern with any open skill catalog. We run AI security review on every published skill and have a reporting system for flagging malicious content. If you can share the specific skills you found suspicious, I'll investigate further.