METR's @CFGeek warns that the scariest AI security scenario is one where agents actively try to bypass their own safety systems, leaving labs with just one line of defense: "There were multiple failures. Companies not having good monitoring, and agents doing actions that a human in the same situation probably would not do. A human would probably report that they were going off task and shut down." "In the future, we may have to rely a lot on security, because the models might still be very…