I Built an Open-Source AI Firewall Because Every LLM App Leaks Data

Every LLM app I audited had the same problem. Users type real data into AI features. Names, emails, social security numbers, credit card numbers, medical details. The app takes that input, wraps it in a prompt, and sends it straight to OpenAI or Anthropic. No filtering. No redaction. Nothing. The developer didn't plan for it. The product manager didn't think about it. The compliance team doesn't even know AI features exist yet. I built AI Security Gateway to fix this. It's an open-source proxy t