The Bank of England ordered all UK banks to update their information security measures following a heist connected to the SWIFT financial messaging network.
According to Reuters, the United Kingdom's central bank sent out its request to all financial organizations it regulates in mid-to-late April.
It asked that each bank conduct a compliance check to confirm whether they were abiding by security recommendations set forth by SWIFT following a heist involving the Bangladesh Bank.
In February, news first broke about how a group of attackers attempted to steal one billion dollars from the Bangladesh Bank. The attackers infiltrated the Bank's account at the New York Federal Reserve and used fraudulent SWIFT messages to make off with $81 million.
The Bank is currently working to recover the money it lost.
After the attack against the Bangladesh Bank, the messaging service decided to reissue its security recommendations to all member organizations.
The content of those releases is not known at this time.
For its part, the Bank of England asked all UK banks to conduct user entitlement reviews to make sure only authorized staff had access to SWIFT. It also ordered them to review their computer logs, look for indicators of compromise provided by several private security firms, and specify when they would be able to implement an update released by SWIFT in April.
This marks the first instance where a central bank in a major economy has ordered all of the banks it regulates to conduct a security review.
Investigators are still investigating the Bangladesh Bank heist. So far, they have determined that the group of attackers used a piece of malware linked to the 2014 Sony hack to modify SWIFT's Alliance Access software.
More than 11,000 banking organizations located in over 200 countries use SWIFT's network to approve financial transactions.