A threat actor is selling what they claim to be 30 million T-Mobile customers’ Social Security and driver license numbers on an underground web forum. The collection is a subset of the purported 100 million records contained in stolen databases. The seller’s offer does not mention T-Mobile. The seller told Motherboard and BleepingComputer publications that the source is in fact the T-Mobile servers. Specifically, they claim to have penetrated T-Mobile’s production, staging, and development s
