U.S. regulators launched an urgent probe into banking system security following the Binance hack incident.

According to Reuters, after Binance suffered a $6.3 billion hack last week, the U.S. Federal Reserve (Fed) and Office of the Comptroller of the Currency (OCC) began contacting banks on Monday to inquire about unusual activity or service disruptions in their systems, aiming to screen for risks of the crypto market security incident spreading to the traditional financial system. Sources familiar with the matter said multiple banks are conducting security diagnostics on their internal systems and assessing whether there are vulnerabilities that could be exploited by similar attack methods. The cybersecurity team of a major U.S. bank has contacted Binance and started drafting an internal report, which may later be used to review the bank’s systems and update its cybersecurity measures. Binance stated that it is currently in close contact with global regulators to promptly report the security incident. The Fed and OCC declined to comment. Sources also noted that the rapid evolution of AI models has increased the difficulty for banks to guard against hacks, and banks are investing significant resources in reviewing and patching cybersecurity code.