Up to 15 Million T-Mobile Customers Hit by Experian Breach

T-Mobile says as many as 15 million people may have been affected by the data breach, an attack that didn't compromise T-Mobile's own systems but rather those of its credit partner — the data vendor and credit bureau Experian. To be clear, the hack hurts even non-subscribers to T-Mobile — credit applicants who for whatever reason ultimately went with another service.