Since late 2013, an unknown group of hackers has reportedly stolen $300 million (possibly as much as triple that amount) from banks across the world, with the majority of the victims in Russia.
Cyber security firm Kaspersky Lab was called in to investigate ATMs that where randomly dispensing cash without any user input. The firm soon discovered that it was the least of the bank’s problems.
The bank internal network had been infiltrated by hackers, who compromised employee’s computers with a malware called Carbanak.
Kaspersky Lab is unable to name the banks involved because of non-disclosure agreements, and no banks have come forward to acknowledge the breach. “The silence around the investigation appears motivated in part by the reluctance of banks to concede that their systems were so easily penetrated, and in part by the fact that the attacks appear to be continuing”.
Source : http://www.nytimes.com/2015/02/15/world/bank-hackers-steal-millions-via-malware.html