OWASP Agentic Top 10 — What Every AI Developer Needs to Know in 2026

OWASP released the Agentic Security Initiative (ASI) Top 10 in 2026 — the definitive list of security risks for AI agent applications.

Unlike the LLM Top 10 you may already know, ASI Top 10 focuses on multi-agent systems : trust between agents, tool misuse, cascading failures, identity exploitation.

This post walks through all 10 risks with real data from scanning 1,646 production system prompts.

Why Agent Security ≠ LLM Safety

LLM safety is about one model : can it be injected? Will it leak data?

Agent security is about a system :

Agents call tools (APIs, databases, file systems)

Agents communicate with other agents

Agents make autonomous decisions without human approval

Agent failures cascade — one compromised agent puts the entire pipeline at risk

An injected chatbot outputs bad text.…