System and method for detecting and mitigating unauthorized access and tampering with respect to a device

A method comprising:

• detecting an event that indicates an attempt to access a portable device, wherein detecting the event comprises detecting a mixed frequency signal associated with at least an external device;
• determining that a set of frequencies associated with the mixed frequency signal comprises a first frequency;
• comparing the first frequency with a set of authorized frequencies;
• determining that the first frequency is not among the set of authorized frequencies;
• and
• in response to determining that the first frequency is not among the set of authorized frequencies:
• determining that the first frequency is associated with a malicious device;
• and
• performing one or more countermeasure actions, wherein the one or more countermeasure actions comprise altering signals associated with the portable device, wherein altering the signals comprises altering at least one of an operating frequency, an amplitude, or a phase of the signals associated with the portable device.

A non-transitory computer-readable medium that stores instructions, wherein when the instructions are executed by a processor, cause the processor to:

• detect an event that indicates an attempt to access a portable device, wherein detecting the event comprises detecting a mixed frequency signal associated with at least an external device;
• determine that a set of frequencies associated with the mixed frequency signal comprises a first frequency;
• compare the first frequency with a set of authorized frequencies;
• determining that the first frequency is not among the set of authorized frequencies;
• and
• in response to determining that the first frequency is not among the set of authorized frequencies:
• determining that the first frequency is associated with a malicious device;
• and
• performing one or more countermeasure actions, wherein the one or more countermeasure actions comprise altering signals associated with the portable device, wherein altering the signals comprises altering at least one of an operating frequency, an amplitude, or a phase of the signals associated with the portable device.