Cyberattacks

Jersey Warns Businesses About Global 'ToolShell' Cyberattacks

Jersey Cyber Security Centre alerts businesses to 'ToolShell' attack exploiting SharePoint vulnerabilities, urging prompt software updates.

By Content Team

Aug 9, 2025

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The Jersey Cyber Security Centre is warning local businesses about a dangerous new cyberattack called 'ToolShell' that exploits vulnerabilities in Microsoft SharePoint software. The attack has hit organizations worldwide, with 31% of successful breaches occurring in the US, followed by Mauritius, Germany, and France.

Five Jersey organizations were identified as highly vulnerable and took immediate action, including shutting down critical systems. The attack combines two security flaws to steal data, damage systems, and enable ransomware attacks.

JCSC director Matt Palmer stressed that outdated software creates serious risks, as Microsoft's patches don't work on older, unsupported systems. The centre recommends organizations install security updates within 14 days and isolate any systems that can't be patched.

Source: Jersey Evening Post

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