Banks plan class action against TJX

Groups representing 300 banks plan to file a class-action lawsuit against U.S. retailer TJX Cos. over a security breach involving data from millions of credit and debit cards.

The lawsuit, to be filed today in U.S. District Court in Boston by the Massachusetts Bankers Assn., will seek at least “tens of millions of dollars” in damages, said Bruce Spitzer, a spokesman for the association.

Framingham, Mass.-based TJX, which operates the T.J. Maxx and Marshalls chains, said last month that information from 45.7 million credit and debit cards had been stolen.