Visa, MasterCard scramble after massive data breach

Credit card giants Visa and MasterCard were scrambling on Friday to thwart cyber crooks who looted a massive trove of precious account data, evidently from a payment processor in New York.

Unauthorized access hits Sony PlayStation accounts

Sony said Wednesday intruders staged a massive attempt to access user accounts on its PlayStation Network and other online entertainment services in the second major attack on its flagship gaming site this year.

Citigroup says 360,000 affected by hackers

Hackers stole account information of more than 360,000 of Citigroup Inc.'s U.S. credit card customers in a recent data breach, the bank said Wednesday, almost double the number initially thought.

More Sony websites hacked, 8,500 Greek accounts hit

Sony on Tuesday said its websites in three countries had been hacked with 8,500 Greek user accounts compromised, in a blow to efforts to restore confidence after a huge data breach affecting millions.

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