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T-Cellular on Monday stated it skilled a hack that uncovered account PINs and different buyer knowledge within the firm’s second community intrusion this yr and the ninth since 2018.

The intrusion, which began on February 24 and lasted till March 30, affected 836 prospects, in keeping with a notification on the web site of Maine Lawyer Basic Aaron Frey.

“The knowledge obtained for every buyer various however might have included full title, contact data, account quantity and related cellphone numbers, T-Cellular account PIN, social safety quantity, authorities ID, date of start, stability due, inner codes that T-Cellular makes use of to service buyer accounts (for instance, price plan and have codes), and the variety of traces,” the corporate wrote in a letter despatched to affected prospects. Account PINs, which prospects use to swap out SIM playing cards and authorize different vital adjustments to their accounts, have been reset as soon as T-Cellular found the breach on March 27.