Cellcom Cyberattack Triggers Statewide Service Outage

Cellcom, a regional wireless provider based in Wisconsin, has confirmed that a cyberattack caused the widespread service disruptions that began on the evening of May 14, 2025. The company disclosed that the incident led to extended outages affecting mobile connectivity for many of its customers across the region.

The nature and scope of the cyberattack have not been detailed, but Cellcom stated that the disruption was directly linked to malicious activity targeting its systems. The company is working to restore full functionality and continues to investigate the breach.

The outage, which persisted for several days, left users without reliable access to voice and data services, impacting both personal and business communications. Cellcom has not indicated whether customer data was compromised during the incident.

The attack underscores growing concerns over cybersecurity vulnerabilities facing telecom providers, particularly regional carriers with limited resources compared to national operators. Further updates are expected as the investigation progresses.