Hackers gained access to information-sharing software developed by Japanese information and communication technology company Fujitsu and stole data belonging to multiple Japanese government entities.
The software in question is Fujitsu ProjectWEB, a cloud-based enterprise collaboration and file sharing platform, widely used by multiple Japanese government agencies and businesses.
Local media reported that so far government entities affected by the incident include the Ministry of Land, Infrastructure, Transport, and Tourism, the Cabinet Secretariat, and the Narita Airport.
In the case of the Ministry of Land, Infrastructure, Transport, and Tourism the intruders stole files containing at least 76,000 email addresses of its employees and business partners, as well as data on the ministry's internal mail and Internet settings.
Chief Cabinet Secretary Kato Katsunobu said that no damage to the Cabinet Secretariat's cybersecurity center's system has been confirmed, and that the center's operations have not been compromised.
According to the Cabinet Cybersecurity Center, the intrusion was detected by Fujitsu on May 24.
In a statement regarding the matter, Japanese tech giant said it temporarily suspended the ProjectWEB platform to “prevent further unauthorized access.”
“We will continue to work on investigating and analyzing the scope of impact and the causes of all projects that use "Project WEB" with the cooperation of our customers,” Fujitsu said.