A China-based hacking group is deploying Warlock ransomware on Microsoft SharePoint servers vulnerable to widespread attacks targeting the recently patched ToolShell zero-day exploit chain. Non-profit ...

Update 7/21/25: Added links to the security updates for Microsoft SharePoint 2019. Critical zero-day vulnerabilities in Microsoft SharePoint, tracked as CVE-2025-53770 and CVE-2025-53771, have been ...

Microsoft has patched three critical zero-day SharePoint security flaws that hackers have already exploited to attack more vulnerable organizations. Responding to the exploits, the software giant ...