Patent ID: 8281114
Filing Date: 2012-10-02
Classification: G06F

Abstract:
1. A method for protecting a computer from security breaches involving a hardware-based key logger installed between the computer and an attached input device, the method comprising: when the computer is first powered on, storing authorization information received from an administrative user to indicate that the input device is authorized to communicate with the computer; detecting a potential tampering attempt by an unauthorized user comprising detachment of the input device from the computer, installation of a hardware-based key logger, and reattachment of the input device, so that the hardware-based key logger is installed between the computer and the input device; requiring entry of a password for authorizing the input device; if the required password is entered, authorizing the input device to communicate with the computer and, otherwise, continuing to block communication from the input device to the computer; storing authorization information indicating whether or not the input device is allowed to communicate with the computer; detecting detachment of the input device from the computer; when said potential tampering attempt is detected, updating the authorization information to indicate that the input device is no longer authorized to communicate with the computer; and upon said reattachment of the input device, blocking communication from the input device to the computer until the input device is again authorized.