Why can't there be a way to prevent any program from sending anything out?
Example. You are getting information from a site you have chosen. You are connected through your ISP. You know who those two are.
Why can't I limit uploads to just those two sites until I choose otherwise, and no others?
I assume there must be a good reason.
Do you know about ActiveX?
That seems to be a favored entry path....and sockets?
You can... with a good firewall. It makes sure only programs YOU approve of can access the 'Net and blocks harmful ones from coming through. If certain attacks come from a hostile IP, you can add it to your firewall's blocklist as well as Internet Explorer's Restricted Zones applet.