“This is likely the most sophisticated attack the world has seen to date in terms of the tactics and methods that cybercriminals have used to remain covert,”
The hackers spent months monitoring infiltrated systems, learning the routines of the bank involved. When it came time to cash out varying methods were used including account transfers to dummy accounts and causing ATM machines to dispense cash at scheduled times. The largest sums were taken by gaining access to the banks accounting systems and artificially inflating an account balance, then quickly transferring the excess balance to a dummy account.
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