Why it matters
OpenAI presents GPT-Red, an internal automated red-teaming model trained through attacker-defender self-play. It generates prompt-injection attacks for held-out evaluations and adversarial training, including tests against tool-using production agents.
My takeaway: The strongest pattern is the workflow: define explicit threat models and success criteria, test on held-out systems, feed failures back into training, and retain human and third-party testing to check blind spots in automated attacks.