Midwestern telco Cellcom confirms cyber incident after days of service outages

Cellcom, a telecommunications subsidiary of Nsight serving Wisconsin and Upper Michigan, disclosed a week-long cyber incident that disrupted voice and SMS services for thousands of customers. The company says the issue is segmented to voice and texting, has engaged cybersecurity experts and the FBI, and is working on recovery, but has not provided technical details or confirmed whether ransomware or data compromise occurred.