Developer website: ProteMac
ProteMac LoginTrap monitors all login events and detects whether a login attempt was successful or failed. After a login attempt was made the program captures an image from the iSight camera, so that you are able to see who is trying to break into your Mac. An alarm e-mail with iSight camera snapshot attached is sent immediately after a login attempt.
ProteMac LoginTrap is highly recommended to all privacy-concerned Mac users. The application prevents both material theft of Mac machines and virtual theft of personal data, as well as helps to track down a thief if a Mac laptop or desktop has been stolen. In many cases installing ProteMac LoginTrap is enough to improve and ensure physical security of your property and to prevent unwanted access to your personal information and data. The program is a good alternative to various safety devices (USB and computer locks, fingerprint readers, etc) that physically prevent theft and block unauthorized access to computer data.