AI agents are already operating inside enterprise networks, quietly doing some of the work employees once handled themselves — writing code, drafting emails, retrieving files, and connecting to internal systems. Sometimes they also make costly mistakes. At Meta, an employee asked an AI assistant to help manage her inbox. It deleted it instead. At Amazon, an internal agent autonomously decided to tear down and rebuild a deployment environment, knocking an AWS service offline for 13 hours. These incidents offer glimpses of a larger shift security leaders are confronting: Autonomous software is now acting inside corporate environments with real permissions and real consequences. “Agents are lik...