A platform including a security system is described. The security system comprises, in one embodiment, a multi-state system having a plurality of modes, available whenever the platform has a source of power. The modes comprise an unarmed mode, in which the security system is not protecting the platform, an armed mode, in which the platform is protected, the armed mode reached from the unarmed mode, after an arming command, and a suspecting mode, in which the platform is suspecting theft, the suspecting mode reached from the armed mode, when a risk behavior is detected.