Vladimir Levin hacks Citibank
Seen by many as one of the first high-profile instances of financially-motivated hacking, Russian crime-ring leader Vladimir Levin managed to gain access to accounts located in the Citibank network and stole millions of dollars in 1995.
As part of a larger crime group, Levin was able to get a list of customer codes and passwords that allowed him to log in and transfer $3.7 million illegally. The FBI eventually caught up with Levin and he was sentenced to three years in jail in 1998. He was also ordered to pay Citibank $240,015 in restitution.