"Why is Facebook not being prosecuted for "hacking" my computer and defeating security systems i have put in place?"
Now there's a thought... Take it to small claims court for damages due to hacking, increased expense of internet, privacy invasion, whatever, for the max amount in small claims.
They most likely will not bother appearing, you collect default settlement, and if enough people do it (Free Money!! is a great motivator!) Then it's death by a thousand cuts for them. :)