Prompt injection is one item on a list of ten. That is worth sitting with, because if you read the agent security conversation online you would think it was the whole list. The OWASP Top 10 for LLM Applications 2025 opens with LLM01:2025 Prompt Injection, and then names nine more things that will take your system down: Sensitive Information Disclosure, Supply Chain, Data and Model Poisoning, Improper Output Handling, Excessive Agency, System Prompt Leakage, Vector and Embedding Weaknesses, ...