Luke “Milky” Moore, an Australian, was able to overdraft over $1.5 million from his bank. He was eventually sent to prison, appealed and argued his own case, was released, and is now studying to become a criminal defense lawyer.
A rancher in Oregon named Bill Brown would often write checks on any paper available. This often included soup can labels and newspaper margins. As he was rich and known for this, the banks would cash the checks without question.
In 2008, a man made $50,000, penny by penny, by opening thousands of fake accounts and pocketing the 1 or 2 cent verification deposits.
British banking giant HSBC admitted to laundering billions of dollars for Colombian and Mexican drug cartels and violating a host of important banking laws (from the Bank Secrecy Act to the Trading With the Enemy Act), but there were no criminal charges and no one went to prison.
A man successfully “foreclosed” on a Wells Fargo office because they failed to respond to his letters of inquiry and then ignored his $1,000 small claims judgement.
In 2005, an inexperienced trader at a Japanese bank tried to sell 1 share of J-Com stock for ¥640,000. He accidentally sold 640,000 shares for ¥1 each; the equivalent of selling $3bil worth of shares for the price of $5,000.
A customer closed his account in a bank with more than a million dollars in it after they refused to validate his 50c parking ticket.