if you use an agent, you can turn on confirmation for usage of the key with "ssh-add -c" it will prompt using SSH_ASK_PASS... I always do that and i think its a

if you use an agent, you can turn on confirmation for usage of the key with "ssh-add -c" it will prompt using SSH_ASK_PASS... I always do that and i think its always a good measure. of course always turning on agent forwarding is non the less a bad idea :D