On Thursday T-Mobile revealed that hackers had breached Experian’s network and stolen a trove of T-Mobile’s data, which the carrier had sent to Experian to perform credit checks on potential customers seeking financing for phones or cellular plans. The data stolen from those 15 million victims includes their names, addresses, and birthdates, as well as encrypted social security numbers, drivers’ license ID numbers, and passport ID numbers.
Source : Hack Brief: Hackers Steal 15M T-Mobile Customers’ Data From Experian | WIRED