Banks Say 94 Million Accounts Affected by TJX Theft

A group of banks alleged in a court filing that 94 million accounts were affected by the theft of personal data from TJX Cos. -- more than double the number the company previously reported in what already is the largest data breach in history. The data breach affected about 65 million Visa account numbers and about 29 million MasterCard numbers, according to the court filing made public by a group of banks suing TJX over costs associated with the breach.

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