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Apparently, even full-patchedWindows 11devices can be targeted this way.

In his attack, Leviev replaced a key Windows file called ci.dll with an unpatched version.

A woman sitting in a chair looking at a Windows 11 laptop

After replacing the file, the system needs a restart, which makes it look like a normal update.

Until then, Leviev advises organizations to monitor for downgrade attacks.

ViaBleepingComputer

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