The U.K. conducted simulated cybersecurity attacks on its banks' live systems and found they lack basic patching and identity controls.

Shares of the California lender surged 25% on news of the leadership change and preliminary fourth-quarter earnings.

The bank's AI-based virtual assistant, which began development 10 years ago, is now used by 42 million customers and more than 200,000 employees. It does everything from sending wire transfers to unlocking corporate phones.

The collapse of the illicit escrow marketplace disrupts a major hub for "pig butchering" scams, though experts warn the ecosystem will likely fragment.