US Banks Move to Block Third-Party AI Agents from Customer Accounts

The tension stems from a shift in how customers manage their finances, with some users sharing login credentials directly with AI platforms. While these transactions technically bypass traditional security filters because the customer provided the keys, banks view the automation as a significant liability. Industry leaders fear that sophisticated agents could behave unpredictably, potentially destabilizing the institutions trusted to safeguard capital.

Morgan Stanley has confirmed it is blocking third-party agents from its platforms, though it reports no evidence of rogue activity within its own systems. Meanwhile, JPMorgan Chase CEO Jamie Dimon has prioritized the development of internal safeguards, stating that allowing unvetted outside agents into their digital infrastructure poses an unacceptable risk to clients. Charles Schwab is also taking a defensive stance; CEO Richard Wurster noted that the firm tracks and blocks unauthorized agents daily to maintain strict control over authentication and the overall user experience.