Hackers were able to gain access to customer proprietary network information but not financial or personal records.
T-Mobile has revealed that it suffered a data breach in which customers‘ proprietary network information (CPNI), including their phone numbers and call records, was exposed online. Earlier this week, the US telecom began informing its customers via text message that a security incident had occurred that may have impacted some of their account information. However, T-Mobile provided further details in a notice of security incident on its website and explained that its security team recently discovered “malicious, unauthorized access” to its systems.
