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Anti Tamper Mechanisms

Primary area of physical security for embedded systems Attempts to prevent unauthorized physical or electronic tampering against the product Most effectively used in layers Possibly bypassed with knowledge of method - Attackers may intentionally destroy a device to determine its security mechanisms. Tamper Resistance Specialized materials used to make tampering difficult Ex.: One-way screws, epoxy encapsulation Tamper Evidence Ensure that there is visible evidence left behind by tampering Only successful if a process is in place to check for deformity Ex.: Passive detectors (seals, tapes, glues), special enclosure finishes ("bleeding paint")