This is very interesting. As this is also something that just happened to me. I’ve always used F-secures antivirus solutions, but my subscription ended end of October and I haven’t renewed it yet. So about 1 week ago Avast just suddenly appeared. Don’t know why cause I have never downloaded it or have downloaded anything that would have installed it. But I didn’t mind it anyways. Until yesterday when one of my cards apparently was used for Pakistan state oil com and my card got blocked by my card issuer. So then I started investigating and as it’s really really spooky how a program just installed itself onto my computer without me having installed it or done anything it just happened to be there. As previous comments have clearly been made that programs just doesn’t install themselves. And that’s true, something or someone has to install it. Which only makes me believe that someone unauthorized has done this. Which is really scary thinking that a hacker might use avast for something. They should look into that as that’s really serious. Just wanted to let you know that this is happening.
