Wisconsin telecommunications supplier Cellcom has confirmed {that a} cyberattack is liable for a service outage it has been coping with for the previous week.
Each voice and textual content providers have been down for the wi-fi provider’s clients in Wisconsin and Higher Michigan, and the corporate has began to slowly restore a few of them over the previous couple of days.
“We skilled a cyber incident. Whereas that is unlucky, it’s not one thing we have been unprepared for. We now have protocols and plans in place for precisely this type of scenario,” Cellcom CEO Brighid Riordan mentioned in a letter (PDF) to clients.
The provider says it has notified the related authorities of the assault and has been working with exterior cybersecurity specialists to analyze the incident and restore the impacted providers.
Cellcom says that no buyer knowledge seems to have been stolen, because the assault impacted a community section the place no delicate buyer data is saved.
“We now have no proof that non-public data associated to you, your title, your addresses, your monetary data, is impacted by this occasion,” the corporate mentioned.
Whereas a few of the providers have been restored, Cellcom mentioned it could return to regular operations by the top of the week, however couldn’t present a selected estimate.
“We achieved a serious milestone final evening. We’re constructing on that success and anticipate to have the remainder of service restored this week. Each a part of this restoration is being dealt with with care and precision — we won’t rush something that compromises security, safety, or belief,” the provider mentioned.Commercial. Scroll to proceed studying.
The corporate additionally mentioned it could present updates on each the restoration efforts and its investigation into the reason for the incident, however shared no particulars on the kind of cyberattack it fell sufferer to.
The widespread outage, nevertheless, means that ransomware may need been concerned. SecurityWeek has not seen any recognized ransomware teams claiming the assault.
Our makes an attempt to contact Cellcom for a press release have been unsuccessful, as their public relations electronic mail handle is configured to obtain messages from addresses inside the group or allowed senders solely.
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