Hello.
I just opened my Firefox web browser today, and Avast's web shield threw me almost immediately an alert of an URL:Mal being blocked at the default homepage. The blocked address was "push.services.mozilla.com", which if I'm not mistaken is a legitimate Mozilla's address, so it looks pretty weird to me.
I'm scanning my PC in case there is some kind of malware, but so far nothing has been found, and it is highly unlikely it will because I haven't visited any fishy websites or downloaded any add ons or programs recently. The alert only appeared once and besides that the browser seems to be working properly. Could it be a false possitive?
Thanks for your help.