Engineering-focused coverage of defensive AI. Guardrail architecture, classifier ensembles, model hardening, output filtering, refusal training, and the response patterns that hold under adversarial pressure in production systems.https://aidefense.dev/enhttps://aidefense.dev/posts/welcome/https://aidefense.dev/posts/welcome/AI Defense covers defensive AI engineering — guardrails, content filters, and shipping AI features without shipping liability.Sun, 03 May 2026 00:00:00 GMTmetaAI Defense Editorial