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Tag: #cellcom
How Cellcom Responded to a Cyberattack
May 21, 2025
On May 14, 2025, Wisconsin-based mobile carrier Cellcom faced a major disruption that left thousands of customers unable to make calls or send text messages. What initially seemed like a technical glitch quickly escalated into a confirmed cyberattack. While data services and 911 emergency calls remained active, voice and SMS functions were offline for nearly […]
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The Cellcom Cyberattack Breakdown: What They Got Right and Why It Matters
May 21, 2025
Cellcom cyberattack confirmed as the root cause of widespread voice and SMS outages for the Wisconsin-based mobile carrier and its Upper Michigan customers. The incident, which began on the evening of May 14, 2025, left subscribers unable to place calls or send text messages for nearly a week. While data services and emergency 911 connectivity […]
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