American financial powerhouses are rushing to secure their systems amid a flood of popular—and often unpredictable—AI agents.

Axios reported Thursday that major U.S. banks, including Morgan Stanley, Bank of America, and Wells Fargo, are hastily updating their terms of service to prevent agents like Meta’s Muse from taking autonomous action within customer accounts. Such agents have exploded in popularity in recent weeks, with tech companies promoting them as 24/7 virtual assistants, capable of handling mundane tasks with little to no human oversight. Muse quickly leapt to the top of the iOS App Store’s list of free apps in the U.S. after it was launched early last month. On Wednesday, Meta confirmed the Muse app had been downloaded more than ten million times across the U.S. in its first forty days on the market; ChatGPT, by comparison, only had around 3.7 million U.S. downloads in the first forty days after its launch in November 2022.…