i was told that Windows2000 has this "feature": you have to press crtl+alt+del to log in, and by doing this, you won't become a victim of trojan horses.
My questions are:
1) How does it work? Why trojan horses can be kept out of the door by implementing this mechanism?
2) it seems UNIX/Linux systems don't have such a "feature". How do *nix people deal with trojan horses?