I thought that it should not bother me. But it turned out that my device is participating in mining, and I did not even suspect it. Be more careful.
How can this be possible, also how did you know it was mining?
If you see unusual usage of your GPU/video card/HDD it means that something is running that you never noticed.
And it's possible that its mining through any of those and the cause of it is you probably clicked and downloaded a malware that contains a mining software.
Not necessary to dowload a phishing malware to give permission to your device to mine for hackers. Some of the new methods are accessing your cpu/gpu only with your navigator, so it just need you to make a click in a wrong link you received via email or visit a website where you are asked to accept installing cookies into your browser. I don't really know how to identify them but it just recommended to not use any suspecious link and to frequently verify your cpu/gpu work.