Australian TV ratings are hit by a cyber attack one day before the Big Brother finale

Australian TV ratings were reportedly hit by a cyber attack on Tuesday night.

According to TV Tonight, ratings provider OzTAM won’t be delivering the overnight ratings due to a potential cyber-attack at the Nielsen data centre.

The cause of the attack is still unclear and the Nielsen data centre is currently trying to resolve the problem to secure its data.

‘Nielsen has become aware of an unexpected disruption relating to the Australian TV Audience Measurement (TAM) data centre environment,’ a spokesperson said. 

‘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.’

The spokesperson told the publication the team is ‘dedicated to resolving this matter swiftly’ and will ‘keep the industry informed as new information becomes available.’

The cyber attack happened just one day before Channel Seven’s Big Brother finale is set to air.

Australia will vote for a winner during the live finale on Wednesday, as Chad Hurst, Sophie Budack, and Daniel Gorringe compete to take home the $234,656 cash prize.

Mat Garrick was sent home on Tuesday night, after challenge winner Chad chose to take Sophie and Daniel to the live finale instead.

Chad, Sophie and Daniel popped a bottle of Champagne in the backyard as sparkler machines went off dramatically around them following Mat’s eviction.

The housemates are now competing for a reduced prize of $234,656, after Kieran Davidson stole more than $15,000 from the winner’s kitty last week.

Chad and Sophie have both said they will split the cash if either of them wins.

Head to bigbrother.com.au to cast your vote