I am running Ubuntu Linux and I have reinstalled the system several times but sometimes I still feel like somebody gets remote access to my computer.

I'm not running any software like Team Viewer. I did not allow the remote access in options in Ubuntu. I have completly erased the HDDs and installed pure Ubuntu.

I know that there are some bios viruses in the world but is it possible that the virus would live in an area that is not in touch with OS and after the new OS installation it would infect the system and grant an remote access to the hacker to my computer?

Nothing special has happened but sometimes I recognized that my mouse moved without a reason and since I'm very "paranoid" I would like to make sure myself. Is there any way of scanning the BIOS for viruses?

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    Are you on a laptop? Maybe your touch pad is just a bit trigger happy. While some viruses could survive even if you format your HDD, the mouse mysteriously moving is not a sign you got one. You are just being paranoid. – Anders Jul 5 '16 at 18:06
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    A friend of mine has a Lenovo, and her touch pad can sometimes fire even when her fingers are not near it. That is probably what is happening to you. Assuming advanced viruses in a situation like this is not reasonable. – Anders Jul 5 '16 at 18:44
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    Malware advanced enough to persist OS reinstalls would definitely be advanced enough to not give its presence away by moving the cursor. – André Borie Jul 5 '16 at 20:18
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    Some old dell laptops had a problem like this; the cursor would go off to one corner of the screen randomly. It was due to a damaged & not correctly shielded internal cable. I very much doubt that it's a virus / malware. – JonasCz - Reinstate Monica Jul 5 '16 at 22:01
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    if someone had the capability to put a virus in your BIOS, do you really think they would give it away by making the mouse move erratically? – dandavis Jul 6 '16 at 18:21

Best guess is one or more of the following:

  • touch pad picking up (electrical) noise
  • mouse is picking up vibrations (most likely a fan)
  • faulty drivers causing input when there is none

You could try disabling your touch-pad (physically if necessary) and using a different mouse.

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