Chinese hacking groups SharePoint attacks raise global cybersecurity concerns

Microsoft has confirmed that recent SharePoint server attacks targeting major organizations are tied to multiple Chinese hacking groups. The company revealed that nation-state actors, including Linen Typhoon, Violet Typhoon, and Storm-2603, exploited unpatched vulnerabilities in internet-facing SharePoint servers. This revelation comes as over 50 organizations, including U.S. government departments and private sector players, report breaches linked to this cyber campaign. If you’re wondering who’s behind the SharePoint attacks and how serious the situation is, Microsoft’s latest findings make one thing clear: these Chinese hacking groups are running highly coordinated and sophisticated operations.

How Chinese Hacking Groups Exploited SharePoint Vulnerabilities

Security teams at Microsoft discovered that the attackers took advantage of known vulnerabilities in Microsoft SharePoint that hadn’t been patched on some public-facing servers. These exploits enabled the hacking groups to gain unauthorized access to sensitive systems. Linen Typhoon and Violet Typhoon—both previously known for targeting U.S. critical infrastructure—used advanced persistence techniques and stealthy exfiltration methods. Another group, Storm-2603, joined in, signaling a broader, possibly state-backed initiative to gather intelligence or disrupt systems.

Organizations Affected by the SharePoint Attacks

According to Eye Security, at least 54 organizations have been affected so far. These include a private university, a California-based energy provider, and even a federal health department. The Washington Post reported that some of the attack origins were traced to IP addresses located within China. While the exact scope of data accessed remains under investigation, the nature of the targets suggests a motive beyond financial gain—likely surveillance or geopolitical influence. Such revelations heighten concerns about the ongoing risk posed by Chinese hacking groups in SharePoint-based systems worldwide.

What This Means for SharePoint Users and IT Teams

The Microsoft disclosure should serve as a wake-up call to any organization using SharePoint, especially those with public-facing servers. Keeping systems fully patched and employing advanced monitoring tools is more critical than ever. Microsoft has provided indicators of compromise and mitigation steps in its latest security advisory. The involvement of state-sponsored Chinese hacking groups in SharePoint attacks signals a more aggressive digital strategy that IT teams must prepare for. Prioritizing zero-trust architecture and regular threat assessments can significantly reduce vulnerability to these advanced persistent threats.