Several hacking groups with ties to the Chinese government have been linked to a recent wave of widespread attacks targeting a Microsoft SharePoint zero-day vulnerability chain. They used this exploit chain (dubbed "ToolShell") to breach dozens of organizations worldwide after hacking into their on-premise SharePoint servers. "Microsoft has observed two named Chinese nation-state actors, Linen Typhoon and Violet Typhoon exploiting these vulnerabilities targeting internet-facing SharePoint server...