Several vulnerabilities were found in the firmware of the Logitech wireless dongles that can allow a skilled hacker to take control of your computer sending keystrokes through the wireless dongles.
The attach is possible even if the receiver was designed for a mouse or a presenter.
The attach is not so naive and requires specialised hardware but, better be careful than sorry.
The update fixes the problem. A list of all the affected receivers is on the support site of Logitech. If you have not time to check just download the utility here: https://support.logi.com/hc/en-us/articles/360035037273-Firmware-Update-Tool , plug the receiver and run it: the utility will detect the receiver and decide if an update is due or not.
Stay safe 🙂