Tamper Resistant Module provides several means of protecting stored data, as well as securing certain operations from being interrupted or corrupted. There are several levels of temper resistance, ranging from simple software scrambling to a fully hardwareshielded microcontroller including several sensors and filters. The latter are usually used in SmartCards and provide the highest level of security against all known attack scenarios such as probing, differential power analysis (DPA), brute force and others. Any attack attempt which is recognized by the security controller may either result in an alarm on the chip, which immediately stops its current operation, or in case of tampering, may result in the deletion of security relevant data in the storage such as secret keys.