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Method and system for rendering a stolen mobile communications device inoperative

  • US 10,084,603 B2
  • Filed: 06/05/2014
  • Issued: 09/25/2018
  • Est. Priority Date: 06/12/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining, by an autonomous security component preloaded on a system partition of an internal memory of a mobile communications device where an operating system is stored, the autonomous security component configured to persist after a factory reset of the mobile communications device and the autonomous security component being separate from the operating system, that the mobile communications device is in a first state, the first state being an indication that the mobile communications device is not in possession of an authorized user;

    in response to the determination that the mobile communications device is in the first state, initiating and causing, by the autonomous security component, a destruction of a cryptographic key of a bootloader from a key store on the mobile communications device;

    upon initiating and causing the destruction of the cryptographic key of the bootloader, initiating, by the autonomous security component, a boot sequence at the mobile communications device; and

    during the boot sequence at the mobile communications device after the destruction of the cryptographic key, booting the mobile communications device into a kernel that restricts operation of the mobile communications device so that the mobile communications device can only communicate with a single server (i) to report at least one selected from the group of;

    a mobile communications device location, and mobile communications device contextual information, and (ii) to receive a re-enablement cryptographic key from the single server.

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