Cyber-security firm Symantec Corp said on Tuesday that a second hacking group has sought to rob banks using fraudulent SWIFT messages, the same approach that yielded $81 million in the high-profile February attack on Bangladesh's central bank.

Symantec said that a group dubbed Odinaff has infected 10 to 20 Symantec customers with malware that can be used to hide fraudulent transfer requests made over SWIFT, the messaging system that is a lynchpin of the global financial system.

Symantec's research provided new insight into ongoing hacking that has previously been disclosed by SWIFT. SWIFT Chief Executive Gottfried Leibbrandt last month told customers about three hacks and warned that cyber attacks on banks are poised to rise.

SWIFT and Symantec have not identified specific victims beyond Bangladesh Bank. Symantec said that most Odinaff attacks occurred in the United States, Hong Kong, Australia, the United Kingdom and Ukraine.

Symantec said it would share technical information about Odinaff with banks, governments and other security firms.

Read more at Reuters.