Sinclair Broadcast Group, which operates dozens of TV stations across the U.S., said Monday that some of its servers and work stations were encrypted with ransomware and that data was stolen from its network.
The company said it started investigating Saturday and on Sunday it found that some of its office and operational networks were disrupted. The broadcast group did not immediately say how many TV stations were directly affected.
The Hunt Valley, Maryland-based company either owns or operates 21 regional sports network and owns, operates or provides services to 185 television stations in 86 markets.
In Toledo, Ohio, WNWO appeared to be off the air Monday afternoon. The station posted on Facebook that “our operations are currently limited. We will provide further updates as they become available.”
On WJLA, a Sinclair-owned ABC affiliate in Washington, anchors opened their 4 p.m. newscast by telling viewers the station was under cyberattack and its computers and video servers were down. Nashville, Tennessee’s WZTV put out a notice on its website Monday about “serious technical issues” at the TV station affecting its ability to stream content.