EXCLUSIVE: Overnight ratings are not expected to be delivered to television executives and advertisers at 9am today.
Late yesterday ratings provider OzTAM advised networks that due to a potential cyber-attack at the Nielsen data centre, Overnight ratings would not be published this morning.
The cause and severity of the attack is unclear with Nielsen working locally and globally to resolve the issue as soon as possible. Whilst no panel homes were polled last night, data can be stored for two weeks.
A Nielsen spokesperson told TV Tonight, “Nielsen has become aware of an unexpected disruption relating to the Australian TV Audience Measurement (TAM) data centre environment.
“The day’s TV viewing data will be collected and processed once functionality is restored. This means that Overnight data for Tuesday (July 21) will be delayed.
“Our team is dedicated to resolving this matter swiftly. In the meantime, we will be sure to keep the industry informed as new information on the matter becomes available. “
The potential attack falls in one of the biggest weeks of TV, and on a day in between MasterChef and Big Brother grand finals.
OzTAM’s TV ratings service provider, Nielsen TAM, collects and produces ratings data on OzTAM’s behalf.
Nielsen data for regional viewing is provided to RegionalTAM.
Update Thursday 23rd:
Nielsen statement: “Nielsen has become aware of an unexpected disruption relating to the Australian TV Audience Measurement (TAM) data centre environment. This disruption is derived from a ransomware attack in which Nielsen was the victim. As a result, TV ratings data remains unavailable. Nielsen can confirm, however, that all households are still collecting viewing data and that referencing sites have not been impacted. Nielsen’s global and local infrastructure teams took the steps to contain the incident, launched a robust investigation and are currently working to resolve the issue as fast as possible. We will be sure to keep the industry informed as new information on the matter becomes available.”