Security of 100 AI Agents Tested and Ranked – What You Need to Know

A security study of 100 AI agents found that only 11 are both capable and well-defended, with 98% suffering from the 'lethal trifecta' (private data access combined with exposure to untrusted content combined with ability to take outbound actions, creating too much power with too little control). Computer agents and coding agents pose the greatest security risks because they have wide system access and users cannot see or reliably control what actions they actually take between receiving a task and completing it.