CONCORD, N.H. -- The New Hampshire attorney general's office says it's been notified that TD Bank's potential data breach could affect 43,750 customers in New Hampshire.
The bank has started notifying about 260,000 customers from Maine to Florida that the company says may have been affected by the breach.
Unencrypted backup data tapes were misplaced in transport in March. The tapes contained personal information, including account information and Social Security numbers, but the company is not aware of any misuse of customer information.
TD Bank says it's monitoring the situation.
Officials say the company is sending letters to customers whose data was on the tapes, and is offering free credit monitoring for those who qualify.
TD Bank has eight million customers. It is based in Cherry Hill, N.J., and Portland, Maine.