The Japan Aerospace Exploration Agency (JAXA) has experienced several cyberattacks since last year, the government said Friday.

The agency has begun an investigation to determine the scope of the damage caused by the attacks and taken measures to shut down the networks that may have been involved in the incidents, Chief Cabinet Secretary Yoshimasa Hayashi said.

“I would like them to proceed with the investigation and take the necessary measures,” Hayashi said, adding that the networks hit by the hackers did not host sensitive information pertaining to rockets or satellites.