to be honest, Im so used to recognizing the viruses/worms ect that it doesnt bother me. I bypass em. you can block em but that kinda would limit the hosts? even tho those hosts are probably fake hosts. Im no expert by any means, I just know from experience how to avoid the junk files. I rarely come up with em as I basically just search for music and have never blocked any host, I just try to filterout the junk as much as possible.