3.2.3. Replay Attack

Smart homes and SG are continuously communicating and sharing information about electricity usage and forecasting the future power demands. If there is a compromised appliance or SM, an adversary can see the consumption report and can replay an old report in place of the current report and can also change the demand-to-supply report or even replay an old control message. For example, if extra power is demanded or an appliance asks to be scheduled for off peak hours, a replay attack could alter the demand to low power or the appliance can be switched ON at once and cause an inconvenience [55].
