The sources did not say if this was a ransomware attack or some other cyber intrusion, but systems used by the stations were impacted and station operations were disrupted.
The attack is being investigated by federal law enforcement, one of the sources said.
Multiple systems are still down this week, including access to the digital video library, according to employees from two stations. Weather computers were also not working for at least two stations.
Some station employees tell CNN they have not yet recovered email and are working on workarounds. Stations have asked staff not to open…
