TJX Cos. Inc. will pay $9.75 million to 41 states for failing to protect customers’ financial information from a massive computer breach announced in 2007 that exposed millions of customers’ personal and credit card data to hackers.

Under the multistate settlement filed in Suffolk Superior Court today, the operator of the T.J. Maxx, Marshalls, HomeGoods and A.J. Wright chains agreed to ensure that it’s safeguarding consumers’ data and addressing security system deficiencies that were in place when the breach occurred to the extent that it already hasn’t done so.