"The Biden administration is hunting for malicious computer code it believes China has hidden deep inside the networks controlling power grids, communications systems and water supplies that feed military bases in the United States and around the world... The discovery of the malware has raised fears that Chinese hackers, probably working for the People’s Liberation Army, have inserted code designed to disrupt U.S. military operations in the event of a conflict... The first public hints of the malware campaign began to emerge in late May, when Microsoft said it had detected mysterious computer code in telecommunications systems in Guam, the Pacific island with a vast American air base, and elsewhere in the United States... Chinese cyberoperations seem to have taken a turn. The latest intrusions are different from those in the past because disruption, not surveillance, appears to be the objective, U.S. officials say..." https://dnyuz.com/2023/07/29/u-s-hu...t-could-disrupt-american-military-operations/
"China hacked Japan’s sensitive defense networks... In the fall of 2020, the National Security Agency made an alarming discovery: Chinese military hackers had compromised classified defense networks of the United States’ most important strategic ally in East Asia. Cyberspies from the People’s Liberation Army had wormed their way into Japan’s most sensitive computer systems... The hackers had deep, persistent access and appeared to be after anything they could get their hands on — plans, capabilities, assessments of military shortcomings,.. By early 2021...cybersecurity and defense officials realized the problem had festered. The Chinese were still in Tokyo’s networks..." [Long Read -- Paywall but I think WaPost allows a few free views per month] https://www.washingtonpost.com/national-security/2023/08/07/china-japan-hack-pentagon/