US 12,339,957 B2
Detecting tampering of an electronic device
Ameer Kashani, Southfield, MI (US); and Gopalakrishnan Iyer, Santa Clara, CA (US)
Assigned to Denso Corporation, Kariya (JP)
Filed by Denso Corporation, Kariya (JP)
Filed on Mar. 8, 2022, as Appl. No. 17/689,287.
Prior Publication US 2023/0290193 A1, Sep. 14, 2023
Int. Cl. G06F 21/55 (2013.01); B60R 25/00 (2013.01)
CPC G06F 21/554 (2013.01) [B60R 25/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A security system, comprising:
one or more processors; and
a memory communicably coupled to the one or more processors and storing:
a control module including instructions that, when executed by the one or more processors cause the one or more processors to:
acquire a fault status about observed anomalies within a device, the observed anomalies relating to unauthorized access to the device, wherein the instructions to acquire the fault status including instructions to monitor activity within the device by measuring target signals to characterize at least electrical activity within the device and monitor against an attack attempting to sense electrical characteristics on I/O pins of the device, the target signals including at least electrical signals on the input/output (I/O) pins of the device, electrical signals from components within the device, fault codes, and reset signals, and wherein the instructions to monitor the target signals include instructions to repurpose an analog-to-digital converter of the device for measuring the target signals;
analyze the fault status to identify whether the fault status satisfies a fault threshold; and
activate a response when the fault status satisfies the fault threshold indicating a presence of the unauthorized access to control the device to mitigate the unauthorized access by performing at least one of: deleting contents from a memory, and locking the device from further operation, wherein the security system is embedded within the device.