OWASP Just Shipped the Security Checklist Every Agent Team Needs

The first canonical security framework for agentic applications is here, and the timing couldn't be better.

OWASP released the Top 10 for Agentic Applications 2026, developed with over 100 security experts. ASI01 Agent Goal Hijacking leads the list, and if you've been following today's other stories, you already know why. Attackers manipulate agent objectives through poisoned inputs because agents can't reliably distinguish instructions from data. The LiteLLM attack (story #1) is a textbook case of ASI02 Tool Misuse & Exploitation. Claude Code's auto mode classifier (story #2) is specifically designed to guard against ASI01.

A Dark Reading poll shows 48% of security professionals now rank agentic AI as the #1 attack vector for 2026. That's higher than deepfakes. Higher than ransomware. The full list covers Identity & Privilege Abuse (ASI03), Excessive Autonomy (ASI04), Improper Output Handling (ASI05), and all the way to Rogue Agents (ASI10), which is the nightmare scenario where an agent starts operating outside its intended parameters with no human in the loop.

What makes this different from yet another security framework: it's specific to agents, not LLMs generally. The threat model accounts for tool use, multi-step reasoning, autonomous decision-making, and inter-agent communication. These are fundamentally different attack surfaces than prompt injection against a chatbot.

If you're shipping agents to production, print this list and tape it to your monitor. Map each of your agents against all ten categories. The uncomfortable reality is that most teams I've talked to are addressing maybe two or three of these. The other seven are open attack surfaces they haven't thought about.