The short version of "Why 3" is because if the attacker controlls the first and the last you loose, if not you win. So it doesn't really matter how many are in between because the attcker doesn't need to controll those to identify your traffic.
That's of course a bit over simplified but if you want real details you need to read the online documentation. -Jon -- tor-talk mailing list - [email protected] To unsubscribe or change other settings go to https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-talk
