What is red teaming, and how do you red team an LLM application?

Red teaming is deliberately adversarial testing — you attack your own system before users or bad actors do. For an LLM app, probe for prompt injection (inputs that override your instructions), jailbreaks (bypassing safety rules), leakage of the system prompt or other users' data, harmful or biased outputs, and tool misuse (tricking an agent into dangerous actions). Combine manual creative attacks with automated adversarial prompt generation, and cover edge cases across languages and encodings. Track which attacks succeed, fix with input filtering, output guardrails, least-privilege tool permissions, and prompt hardening, then re-test. For multimodal systems, remember text-only tests miss attacks hidden in images or audio. Red teaming is ongoing, not a one-time pre-launch checkbox.