An employee uploaded customer data to an unauthorized AI app. The bank says it reached the vendor before a model could train on the data.

Brian Moynihan spoke of the challenges of developing and maintaining Erica, the bank's main internal AI model, with precision.

The corporate finance fintech now has a $44 billion valuation and is building out an AI token spend management offering for its 7,000-plus enterprise customers.

The suit tests an unusual theory: that a borrower's lawyer crossed from representing a client into joining a $145 million fraud.