Prompt injection is the new application-security frontier. As AI agents read untrusted content and take actions, defending against injection is essential to secure AI deployment.
How injection happens
Malicious instructions hidden in documents, web pages, or tool outputs can hijack an agent's behavior. Any agent that reads untrusted input is exposed.
Layered defenses
Constrain tool permissions, isolate untrusted content, validate outputs, and keep humans in the loop for high-impact actions. Defense in depth beats any single filter.
Test like an attacker
Red-team your agents and evaluate them against injection attempts before production. Evals turn 'we hope it's safe' into evidence.