Coinbase is reimbursing users following a data breach that turned into an extortion attempt.The breach happened when cybercriminals convinced “a small group” of company insiders to copy the data from its customer support tools for less than 1% of Coinbase’s monthly transacting users, according to a Thursday (May 15) company blog post.“Their aim was to gather a customer list they could contact while pretending to be Coinbase — tricking people into handing over their crypto,” the post said. “They then tried t ...