Fed and OCC Quiz U.S. Banks After $6.3 Billion Binance Hack

Bitcoin Magazine

Fed and OCC Quiz U.S. Banks After $6.3 Billion Binance Hack

U.S. bank regulators contacted banks this week to check whether their systems had any vulnerabilities after last week’s $6.3 billion hack of Binance, Reuters reported Thursday, citing several people familiar with the matter.

Supervisors from the Federal Reserve and the Office of the Comptroller of the Currency began reaching out to banks on Monday morning, asking about any unusual activity or disruption in their services.

The outreach shows regulators are treating the largest crypto theft on record as a possible risk to traditional finance, not just a problem for crypto exchanges, at a time when links between banks and the crypto industry have tightened.

One source at a bank that regulators contacted told Reuters there had been no disruptions to its services. Employees there prepared talking points for customers but have since received few inquiries.

Banks have been studying the attack and running diagnostics on their own systems to make sure they could defend against something similar, two people familiar with the efforts said.

Within hours of the hack, a cybersecurity team at one of the largest U.S. banks reached out to counterparts at Binance. That team is writing an internal report that will lead to a review of the bank’s systems and possibly cybersecurity updates. It was not yet clear whether the bank would be vulnerable to the same tactics.

The biggest concern, one person said, is that artificial intelligence models have been evolving quickly, making it hard for banks to keep up with hackers. Banks are devoting a lot of resources to reviewing and patching their cybersecurity code.

Binance said it was not aware of conversations between banks and regulators or whether the hack had any impact on U.S. banks.

“We are in close contact with regulators all over the world, keeping them up to date on this security breach,” a Binance spokesperson said.

The concern about AI tracks with how the attack unfolded. Binance said the theft began with a fake job interview and ran for five months before any coins moved. The campaign combined a poisoned software download, a staged recruitment process, malware that evaded endpoint detection and an internal AI tool that the attackers turned against the company’s own wallet engineers.

Funds began leaving Binance hot wallets across multiple blockchains on Oct. 29. Blockchain analysis firms Chainalysis and TRM Labs linked the hack to TraderTraitor, a unit associated with North Korea.

Binance reopened withdrawals in stages four days later, starting with bitcoin. It has said it froze or intercepted about $2.85 billion of the stolen assets and replenished 98% of affected tokens from its own funds.

None of the techniques Binance described are unique to crypto. Social engineering, malicious downloads and compromised internal tools are risks every large financial institution faces, which helps explain why bank cybersecurity teams moved within hours.

The checks come after U.S. regulators spent the past year and a half clearing the way for banks to do more in crypto. The OCC rescinded its requirement that national banks get supervisory nonobjection before taking on crypto custody and stablecoin activities in March 2025. The Fed withdrew guidance the following month that had required state member banks to notify it before starting crypto activities.

As more banks custody bitcoin, issue stablecoins and serve exchanges, a breach at a major crypto platform becomes a question for bank supervisors too.

Traditional lenders are not immune from large thefts of their own. French bank Credit Mutuel Arkea confirmed a cyberattack on Wednesday that allowed fraudulent transfers from its own account, a theft an onchain investigator has put at more than $133 million. The bank has not confirmed that figure and said customer assets were not affected.

Neither the Fed nor the OCC has publicly announced any new guidance tied to the Binance hack.

This post Fed and OCC Quiz U.S. Banks After $6.3 Billion Binance Hack first appeared on Bitcoin Magazine and is written by Micah Zimmerman.