I am not sure now, but I am afraid you cant actually protect your mind from yourself.
And from the philosophical point of view we are all You. Once again considering how social life nowadays looks on the street... I only think protection of anything is unnecessary. Because when everything is clean it can't harm you. And finally when we are becoming clean we can clean our environment which is very critical at this point. This actually makes internet very psychedelic place because you can't see the people on the other side so you have nothing left but serving certain Ideas.
I think you can understand me. If you want to get some emotional perceiving of life, then you have friends and people around you but when people are sharing emotions on network they become demonic as if those emotions were higher then the actual perceiving of emotions themselves. :( I am not saying that internet is not included in Life but life on the internet is not included in ourselves. :D