An anonymous reader quotes a report from Axios: Major U.S. banks are detecting unauthorized third-party AI agents operating inside customer accounts , with some agents attempting to take actions that appear to be independent of user instructions, sources tell Axios. The difficulty in distinguishing between a human and an unauthorized bot is forcing banks to block the technology and rapidly rewrite their terms of service. [...] This presents significant security risks: banking executives fear the steps agents with login access might take, especially if a user has granted purchase authority or the ability to shift funds.…