The National Computer Network Emergency Response Technical Team/Coordination Centre of China, a non-governmental body that monitors cybersecurity threats, said in a statement on Wednesday that it had found and “dealt with” these attacks.

The statement was widely carried by state media.

Since August, an advanced material design research unit has been targeted in suspected cyberattacks by American intelligence agencies, it said.

Another attack took place in May 2023, according to the centre. The attacker used a breach in Microsoft Exchange software to invade the email server of a large hi-tech enterprise specialising in smart energy and digital information.

The attacker implanted back-door programs in the company’s server and stole email data, then attacked and took control of more than 30 devices to steal commercial secrets, the centre said.