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Error message: A new USB device with keyboard functionality has been connected

Maria Hakonen

Hi,

Sophos is giving me the following message:

"A new USB device with keyboard functionality has been connected:

USB Receiver

Malicious USB devices may pose as a keyboard to install malicious software and enable an attacker to remotely take control of your computer.

Click on block if you did not connect a keyboard to this computer or do not recognize this USB device"

The message consistently appears on startup and sometimes also while I am using the computer. I have always clicked block since I haven't connected a keyboard or USB device to my computer. 

Could someone please let me know how to solve this problem?

Many thanks already in advance!



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  • 0

    Same thing happened to me. But, since I had a wireless keyboard attached, I clicked "allow".

    After that, my wireless keyboard stopped working. Then I rebooted and got an error message saying something like "Network can't be reached. Click here for help."

     

    The minute I saw the blind "click here for help" link, I shut the machine down and came here.

    The warning could be real. Right now, I am keeping the suspect computer turned off until I get a resolution.

  • 0 in reply to Patrick Devaney

    One further fact: the warning came upon waking the computer up from sleeping, not from starting it up cold.

     

  • 0

    Same here. this morning and I got this message on screen. 

    Does not matter if I click Block and the message still appears. have not tried clicking on Allow. 

    I am using Microsoft wireless keyboard and mouse so the device it is saying is correct but not game to click Allow.

     

    When login to the Sophos dashboard, overnight Sophos Home was automatically updated to Premium version and one of the new thing in premium version is Protection/Exploits/Risk Reduction. It has a control to stop malicious USB device. I suspect it did not like my wireless USB keyboard and mouse. 

     

    I have turned it off now. Waiting for the PC to update itself with new settings. 

     

    Will update everyone if that fixes it. 

     

    If this is the cause of the issue, I would not go for the premium version as it could not even detect my keyboard and mouse which are genuine product.

  • 0

    Dear all,

    had the same problem since 21. March.

    When click on Block, Windows 10 crashes!

    Haven’t clicked Allow, only Block!

    The device code matches my Logitech wireless mouse, the receiver is always plugged in.

    Same to the second notebook at the almost same time!

    Any updates from sophos to this issue?

    Kind regards,

    Alex

  • 0 in reply to alescha

    Hi,

    I asked help from Sophos support chat. They said that Sophos Home has automatically given me a premium trial access for a month. I actually have a wireless mouse plugged in but since I have been using Sophos (not Premium) already for about a year, I didn't understand that my own mouse could be the reason for the message. The support said that I can just click allow. To be certain, I unplugged my mouse when I restarted. Since the message didn't come up, I know that by clicking "allow" I will only allow the mouse I am using. After clicking "allow" everything has gone smoothly.

     

    T. Maria

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