A secured computer system includes a communication interface and an intrusion detection module. The computer system may be portable and configured for wireless communication with a user of the system. The user may activate and configure an alarm monitor, which may be triggered by motion of the computer system. If the triggered alarm is not deactivated, an alarm sequence is activated. If the alarm sequence is not cancelled, then security measures for protecting sensitive data on the computer system from unauthorized access may be executed. The security measures may include removing data or rendering a storage device inaccessible.