On March 14, 2024, our production AI customer support chatbot leaked 1,247 unique PII records (including SSNs, unmasked credit card numbers, and internal API keys) to 892 end users over a 72-hour window. This wasn't a prompt injection attack, a database breach, or a misconfigured permission: it was a systemic failure of our LLM guardrail pipeline that cost us $412k in GDPR fines, 14% churn in enterprise accounts, and 3 weeks of all-hands incident response. 📡 Hacker News Top Stories Right Now Serving a Website on a Raspberry Pi Zero Running in RAM (69 points) Google Cloud Fraud Defence is just WEI repackaged (174 points) Cartoon Network Flash Games (13 points) An Introduction to Meshtastic (214 points) PC Engine CPU (59 points) Key Insights Unconstrained LLM generation with no post-processing caused 92% of PII leakage incidents in our 6-month audit of 12 LLM-powered features. We used Azure AI Content Safety 1.2.0 and Presidio 3.12.0 for PII detection, with 14ms p99 latency overhead per request.…