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The headquarters of the Sinclair Broadcast Group in Hunt Valley, Maryland.
Win McNamee/Getty Images
The headquarters of the Sinclair Broadcast Group in Hunt Valley, Maryland.
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Sinclair Broadcast Group was targeted by a ransomware attack over the weekend that disrupted some networks and operations.

The Record reported Sunday that Sinclair stations were experiencing programming issues, initially blamed on technical difficulties, despite indications of a ransomware attack. Sinclair later filed an SEC report confirming it had indeed been targeted by cyber ne’er-do-wells.

“On October 17, 2021, the Company identified that certain servers and workstations in its environment were encrypted with ransomware, and that certain office and operational networks were disrupted,” the SEC report said. “Data also was taken from the Company’s network. The Company is working to determine what information the data contained and will take other actions as appropriate based on its review.”

According to Sinclair, the company detected a “security event” and implemented a response plan to contain the incident while investigating what was happening. That included notifying law enforcement. Sinclair acknowledged that the attack could continue to disrupt operations while being resolved and “cannot determine at this time whether or not such event will have a material impact on its business, operations or financial results.”

The right-leaning media giant claims to provides services to 185 television stations in more than 85 national markets. It entered the Fortune 500 in June. Company shares reportedly dipped over 3% Monday. ABC News said ransomware payments reached more than $400 million worldwide last year.