Major newspaper publisher Asahi Shimbun Co. said the discovery of 17 virus-infected computers indicates it has been the target of a cyberattack.
On the night of Jan. 9, the 17 PCs were found to be transmitting data, including email, based on commands from an external server. The data leaks may have started in late November, the company said Friday.
The Asahi Shimbun reported the case to the Metropolitan Police Department, where the Public Security Bureau is preparing to investigate it.
The newspaper is also cooperating with a security company to track the data leaks and identify the source of the infections.
The major daily came under fire last year after finally deciding to retract 18 long-discredited stories from the ’80s and ’90s about Japan’s wartime sex slaves issue, and then a botched report on testimony given on the March 2011 core meltdowns at the Fukushima No. 1 nuclear power plant by the plant’s manager during the crisis.