1st Source Bank is reissuing cards to all of its debit cardholders following a computer breach that occurred at the South Bend, Ind.-based institution May 12. Hackers accessed 1st Source's computer and compromised some cardholders' debit card information, says Larry Bauer, the bank's vice president of marketing. The breach affected 66 branches in Michigan and Indiana. "A small percentage of cards were affected," Bauer says, declining to say how many cards were affected or how many the bank issues overall. "We're pleased to report no evidence to date of fraud as a result of the breach. No money has been stolen," he said. The bank, which issues debit MasterCards, sent letters to its customers on May 28 informing them of the breach, says Bauer. Though the breach only compromised some cards, the bank chose to reissue all of its debit cards to ensure the safety of cardholder information, he says.

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