@leocg ok guys, I found the extension that caused the problem, it was the '' video speed adjuster '' I just had to deactivate it and the background audios didn't happen anymore, nor did strange videos appear in my youtube history, but this is really strange, because I use this extension for a VERY VERY long time and only now it came to cause this malware? anyway, I need to find a replacement for it now.
thanks for your help @leocg

@leocg ok guys, I found the extension that caused the problem, it was the '' video speed adjuster '' I just had to deactivate it and the background audios didn't happen anymore, nor did strange videos appear in my youtube history, but this is really strange, because I use this extension for a VERY VERY long time and only now it came to cause this malware? anyway, I need to find a replacement for it now.
thanks for your help @leocg

oops, haha, apparently there isn't an option to edit posts here, which is weird, but i didn't understand, why the image didn't go... some weird error, so I had to upload it outside:
![alt text]

So, recently I had the same problem here, right after installing some extensions, I deleted most of them, and today I use only those:

Has anyone been able to figure out which extension might have caused this and how to solve it?