The pact came as a group that tracks U.S. data breaches reported the number of cases in the first three months of this year was more than double the total in last year's first quarter. The TJX agreement, which follows a similar $40.9 million pact in November with Visa Inc., hinges on banks that issue MasterCards agreeing to waive rights to sue TJX in exchange for being paid for breach-related costs. Issuers of at least 90 percent of the MasterCard accounts identified as possibly being compromised in the breach must approve the agreement by May 2 for the settlement to take effect, Purchase, N.Y.-based MasterCard and Framingham, Mass.-based TJX said in separate news releases.