Google "usb switchblade", its all free, set it up and bind it how you want, whop it in some govt or whatever pc and away you go, "cain & Abel", will take any password etc it can find, or just use a rat, "pro rat" it will find a way, if someone has access to a pc then consider everything that is on there is known to everybody, ie your in a govt office and then they leave you for a minute or 2 alone, none of it is safe enough.