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The Defcon talk from the researcher is also quite good. They reverse engineered the firmware update system for some of these devices as well and published patches.

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      Yep, that’s the one.

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      The good thing now is that fwupd (on Linux) can actually update the firmware in the Logitech dongles to fix exactly this vulnerability: https://blogs.gnome.org/hughsie/2017/05/22/updating-logitech-hardware-on-linux/