China says US spies exploited Microsoft Exchange zero-day to steal military info www.theregister.com/2025/08/0…

China has accused US intelligence agencies of exploiting a Microsoft Exchange zero-day exploit to steal defense-related data and take over more than 50 devices belonging to a “major Chinese military enterprise” for nearly a year. In a Thursday alert, the National Computer Network Emergency Response Technical Team / Coordination Center of China (CNCERT/CC), a group which claims that it is non-governmental, said American cyberattacks against Chinese high-tech, defense-related universities, research institutes, and enterprises “have become more targeted and their methods, more covert.”

These data-stealing campaigns pose “a serious threat to the scientific research and production security of China’s defense and defense industries, and even to national security,” the alert continues. The US National Security Agency did not immediately respond to The Register’s inquiries.