SK Telecom has reported a significant cyberattack that has compromised customer USIM data, potentially allowing attackers to carry out further malicious activities. The incident raises concerns about the security measures in place for protecting sensitive personal information in the telecommunications sector.

Cellcom has confirmed that a week-long service disruption affecting voice and text services in Wisconsin and Upper Michigan was caused by a cyberattack. The company is working with cybersecurity experts to investigate the incident, and while some services are being restored, there is no evidence that customer data was compromised.