More than 15,000 incidents were recorded between June 2024 and June 2025, disrupting service for about 9. Copper theft and sabotage were the leading causes, with California and Texas accounting for more than half of all recorded cases. The attackers claim to have stolen 500GB of data, raising concerns about a significant data breach. Learn more about this alarming cyber threat. Telefonica confirmed a data breach involving its internal Jira ticketing system, with stolen data leaked online. /Yonhap News A month has passed since SK. This article by DigitalDefynd examines ten major telecom cybersecurity incidents that highlight the evolving threat landscape facing telecommunications companies worldwide. The largest was in August 2021. It exposed personal information for 76. T-Mobile's repeated security failures have made it a case study in how. Chinese state hackers known as Salt Typhoon have breached at least 9 major U. telecoms including AT&T, Verizon, and T-Mobile.
