A second hacking group is also trying to rob banks by exploiting the SWIFT money transfer system, following a US$81 million heist in February that used a similar approach.
The cyberattacks have been going on since January and have been targeting companies in the U.S., Hong Kong, Australia, and other countries, according to a Tuesday report from security firm Symantec.
A "rough guess" is that about 100 organizations have been hit so far, based on the 74 individual computer infections detected, the security firm added.
As part of their attacks, the hackers used malware to cover up records of fraudulent transactions made over SWIFT, preventing their victims from learning about the money theft.
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