Early hours Saturday morning browsing through pornhub on an adult site another unknown porn site attached itself blocking me out of the web page I was on bombarding me with porn and different porn Web sights not requested in fact I think the websites appeared to be a young aged porn possibly illegal before I knew it I had over 80 sites I had to delete or clear and also in them site I was frequently requested of possible viruses and to download a System Cleaner. Question: how do I protect myself from this happening again.