Abstract: A method for protecting a network having multiple network subscribers against a cyberattack, in which bits or bit sequences of a message are transmitted between the network subscribers in the network via different voltage levels on at least one transmission route of the network. For this purpose, at least one characteristic of the voltage levels or of the transmitted bits or bit sequences is actively modified in at least one of the network subscribers or on the at least one transmission route and the origin of the transmitted bits or of the at least one transmission route is determined on the basis of the at least one characteristic. The cyberattack on the network is detected or the cyberattack on the network is localized in the network as a function of the ascertained origin.

Abstract: A method for providing a computer program for a computing unit of an electronic device, in particular a control device of a motor vehicle or of a household appliance, wherein the method includes: evaluation of properties of the electronic device relating to a susceptibility to side channel attacks and/or fault attacks, as a result of which an evaluation result is obtained, selection of at least one influencing parameter that has an influence on the susceptibility of the electronic device to side channel attacks and/or fault attacks, in particular as a function of the evaluation result, use of the at least one influencing parameter to diversify the computer program for the computing unit.

Abstract: A method for protecting a network against a cyberattack, in which for a message in the network first characteristics of a first transmission of the message are determined and an origin of the message in the network is determined by a comparison of the first characteristics with at least one fingerprint of at least one subscriber or a segment of the network or a transmission route. If a manipulation of the message is detected, a point of attack of the cyberattack in the network is detected and localized in particular on the basis of the origin of the message.

Abstract: A method for protecting a network having multiple network subscribers against a cyberattack, in which bits or bit sequences of a message are transmitted between the network subscribers in the network via different voltage levels on at least one transmission route of the network. For this purpose, at least one characteristic of the voltage levels or of the transmitted bits or bit sequences is actively modified in at least one of the network subscribers or on the at least one transmission route and the origin of the transmitted bits or of the at least one transmission route is determined on the basis of the at least one characteristic. The cyberattack on the network is detected or the cyberattack on the network is localized in the network as a function of the ascertained origin.

Abstract: A method for providing a computer program for a computing unit of an electronic device, in particular a control device of a motor vehicle or of a household appliance, wherein the method includes: evaluation of properties of the electronic device relating to a susceptibility to side channel attacks and/or fault attacks, as a result of which an evaluation result is obtained, selection of at least one influencing parameter that has an influence on the susceptibility of the electronic device to side channel attacks and/or fault attacks, in particular as a function of the evaluation result, use of the at least one influencing parameter to diversify the computer program for the computing unit.

Abstract: A method for operating an electronic device which includes at least one functional unit, the operation of which is characterized by one or multiple state variables, the method including forming a predefinable number of state vectors at different predefinable points in time, each state vector containing one or multiple state variables of the functional unit and/or of the device; ascertaining, as a function of at least one of the predefinable number of state vectors, whether a regular operation of the device and/or its functional unit exists.