US EditionMicrosoft scales back Chinese access to cyber early warning system
Microsoft stopped providing Chinese firms with early proofs of cybersecurity flaws after investigating leaks that may have enabled attacks on over 400 organizations, including U.S. nuclear agencies.
- On August 21, 2025, Microsoft announced that it had restricted certain Chinese firms from receiving early alerts related to cyber threat vulnerabilities.
- The change followed last month's large hacking attempts targeting Microsoft's SharePoint servers, which Microsoft blamed on state-sponsored Chinese hackers, though Beijing denied involvement.
- Microsoft notified members of its Microsoft Active Protections Program , including at least a dozen Chinese firms, of SharePoint vulnerabilities on June 24 and July 7 and restricted affected companies from receiving proof of concept code.
- Microsoft reported detecting attempts to exploit the vulnerability beginning on July 7 and emphasized that it employs both publicly known and confidential measures to protect against the misuse of vulnerability information shared with its partners.
- Microsoft's restriction implies concerns over potential leaks from MAPP members in countries like China where vulnerability reporting to the government is mandatory, though the investigation's details remain undisclosed.
9 Articles
9 Articles
Microsoft Scales Back Chinese Access to Cyber Early Warning System
WASHINGTON—Microsoft said on Wednesday it has scaled back some Chinese companies’ access to its early warning system for cybersecurity vulnerabilities following speculation that Beijing was involved in a hacking campaign against the company’s widely used SharePoint servers. The new restrictions come in the wake of last month’s sweeping hacking attempts against Microsoft SharePoint servers, at least some of which Microsoft and others have blamed …
Microsoft scales back Chinese access to cyber early warning system
Microsoft said on Wednesday it has scaled back some Chinese companies' access to its early warning system for cybersecurity vulnerabilities following speculation that Beijing was involved in a hacking campaign against the company's widely used SharePoint servers.
Microsoft Curbs Early Access for Chinese Firms to Notifications About Cybersecurity Flaws
Microsoft Corp. has curtailed Chinese companies’ access to advance notifications about cybersecurity vulnerabilities in its technology after investigating whether a leak led to a series of hacks exploiting flaws in its SharePoint software.
Microsoft Shrinks Chinese Access To Cyber Early Warning System - Cybernoz - Cybersecurity News
Microsoft has scaled back some Chinese companies’ access to its early warning system for cyber security vulnerabilities following speculation that Beijing was involved in a hacking campaign against the company’s widely used SharePoint servers. The vendor announced that several Chinese firms would no longer receive “proof-of-concept code,” which mimics the operation of genuine malicious software. Proof-of-concept code can help cyber security pro…
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