PyCon26: LLM Governance, Guardrails, and Presidio When the Guardrail Leaks PII

1 comments

• Aherontas a day ago ago

  Part 1/7 of my PyCon Greece 2026 talk, From Prompt to Proof: a Presidio guardrail masked the ΑΦΜ(tax number in Greece) label but leaked the actual tax identifier to the LLM while returning HTTP 200.