A hacker called 'chad' leaves the online credit card clearing house hanging after exposing more than 55,000 credit card numbers. The FBI is investigating Creditcards.com was the victim of an extortion attempt by a cyberthief accused of hacking . . .
A hacker called 'chad' leaves the online credit card clearing house hanging after exposing more than 55,000 credit card numbers. The FBI is investigating Creditcards.com was the victim of an extortion attempt by a cyberthief accused of hacking into its site and exposing more than 55,000 credit card numbers, the company said Tuesday.

The company is working with the FBI on the case, said Laurent Jean, a spokesman for Los Angeles-based Creditcards.com.

"It was an act of retribution," Jean said. "He was angry with us and this was the way he took out his anger. After [he asked] us for money, we did everything we could to prevent him from entering our system."

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