[Ed. – As Peter Bright notes, the hackers, who got into the SWIFT payment network, are thought to be connected with the infamous Sony hackers, and possibly North Korea. They nearly made off with $1 billion from the Central Bank of Bangladesh earlier this year — only a typo by the intruder(s) limiting them to $81 million instead.]
Security firm FireEye, investigating the hack, has been contacted by numerous other banks, including some in New Zealand and the Philippines. While most of the attempted transfers in the original heist were canceled, some $81 million was sent to the Philippines and subsequently laundered through casinos. The SWIFT organization in a statement said that some of these reports may be false positives and that banks should rigorously review their computing environments to look for hackers.
Symantec, meanwhile, has corroborated earlier claims from BAE Systems that the hackers that stole from the Bangladesh Bank are linked to the hackers that have attacked targets in the US and South Korea since 2009 and that hacked Sony Pictures in 2014. The FBI claimed that those hackers were North Korean.