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Due to a vulnerability in Windows that can be exploited via the Internet, we urgently ask you to check whether you have already installed the latest updates.

Black skull © Karolin Kriesch​/​TU Dortmund
A fatal security vulnerability in Windows (all versions, including Windows Server) allows your computer to be attacked from the Internet via IPv6 if you have not installed the latest security updates.

A fatal security vulnerability in Windows (all versions, including Windows Server) allows your computer to be attacked from the Internet via iPv6 if you have not installed the latest security updates. If you enter "Update" in the start bar, you should see "You are up to date", "Last check today". If you have a different display, select "Check for updates". In addition, other important security updates are installed, e.g. to fix an Office vulnerability. Install the offered updates immediately, even if a restart is necessary! Never use Windows versions at the TU that are no longer supplied with updates.

The dates for the end of the supply of updates for Windows 10 and 11 versions can be found here: https://endoflife.date/windows

Technical background:

https://www.golem.de/news/ohne-nutzerinteraktion-windows-systeme-per-ipv6-aus-der-ferne-angreifbar-2408-188014.html

and

https://www.heise.de/news/Patchday-Microsoft-Angreifer-attackieren-Office-und-Windows-mit-Schadcode-9834085.html