Binance hack prompted US regulators to check in on bank systems, sources say

US regulators contacted banks to check for vulnerabilities after last week’s $6.3 billion Binance hack, according to sources. Federal Reserve and Office of the Comptroller of the Currency supervisors began outreach Monday morning, asking whether banks saw unusual activity or disruptions. One contacted bank source said there were no service problems, though staff prepared customer talking points before receiving few inquiries. Banks are reviewing the alleged largest financial heist in history and running diagnostics to defend against similar tactics. A cybersecurity team at a major US bank reportedly reached out to Binance within hours and is preparing an internal systems review. The Fed and OCC declined comment.