Telecommunications Data Breaches — Page 2

A ransomware group claimed a data breach at TDS Telecommunications LLC on May 9, 2026, though this has not been confirmed by the company.

No confirmed data breach for Total Wireless in 2026 has been reported in public sources. There are no reports of affected individuals or exposed data types.

SMTA Sherwood Mutual Telephone Association experienced a data breach in May 2026, claimed by the WorldLeaks ransomware group. The extent of the breach and affected data types are unconfirmed.

Westamerica Communications experienced a ransomware data breach in April 2026, according to reports from a ransomware tracking site.

T-Mobile, USA reported a data breach in March 2026, affecting one individual in Maine due to insider wrongdoing.

Pearce Services, a US-based infrastructure service provider, was listed as a victim of a data breach by the Worldleaks ransomware group in March 2026.

Russell Cellular, a U.S.-based Verizon Authorized Retailer, faces an alleged customer data breach from March 2026, with over 6.3 million records reportedly offered for sale on a hacker forum.

Unisoft Communications experienced a data breach in February 2026, though specific details remain largely unconfirmed by the company.

The Siskiyou Telephone, a telecommunications provider, was reportedly impacted by a data breach in February 2026, though official confirmation and details are currently unconfirmed.

No Comcast data breach has been reported for 2025; however, a 2023 Comcast data breach led to a class action settlement.