Hi igor - I think it sees addresses it doesn’t like. It’s a very good question, because obviously there are no signatures (or shouldn’t be ??? ) in a hosts file.

I will say that if Avast! is doing what I think it may be, then it is good in that .mp3 .avi & etc can be rapidly evaluated–we got caught badly long ago when a .mp3 took us to a very nasty site instead of playing Aerosmith!

Gordon.