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Microsoft Links SharePoint Vulnerabilities to Chinese Hacker Groups

Discover how Microsoft has connected recent SharePoint exploits to three distinct Chinese hacker groups, highlighting critical cybersecurity concerns and necessary precautions.

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By Tom Grant
1 min read
Microsoft Links SharePoint Vulnerabilities to Chinese Hacker Groups

TL;DR

Microsoft has attributed ongoing SharePoint exploits to three Chinese hacker groups: Linen Typhoon, Violet Typhoon, and Storm-2603. These groups have been actively exploiting security flaws in internet-facing SharePoint Server instances to gain unauthorized access. Organizations are urged to apply security patches to mitigate these risks.

Microsoft has officially linked the exploitation of security vulnerabilities in internet-facing SharePoint Server instances to three Chinese hacker groups: Linen Typhoon, Violet Typhoon, and Storm-2603. The tech giant confirmed these findings on July 7, 2025, corroborating earlier reports1.

Key Findings

  • Linen Typhoon and Violet Typhoon: These two groups have been actively exploiting the vulnerabilities to obtain initial access to targeted systems.
  • Storm-2603: This third China-based threat actor has also been observed weaponizing the same flaws to gain unauthorized entry.

Implications for Cybersecurity

The ongoing exploits highlight the critical need for organizations to prioritize cybersecurity measures. Microsoft has urged all users to apply the necessary security patches to protect their SharePoint Server instances from these vulnerabilities2.

Conclusion

The attribution of these exploits to specific hacker groups underscores the evolving threat landscape in cybersecurity. Organizations must remain vigilant and proactive in their security measures to safeguard against such threats.

For more details, visit the full article: Microsoft links ongoing SharePoint exploits to Chinese hacker groups

Additional Resources

For further insights, check:

References

  1. Microsoft (2025). “Microsoft links ongoing SharePoint exploits to Chinese hacker groups”. The Hacker News. Retrieved 2025-07-22. ↩︎

  2. Microsoft (2025). “Security Updates Guide”. Microsoft. Retrieved 2025-07-22. ↩︎

Cybersecurity & Data Protection, Vulnerabilities
cybersecurity vulnerability sharepoint
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