A server for carrying out synchronization control, includes (a) at least one event receiver for receiving an event, (b) a memory storing therein distribution schedule information including a plurality of schedule data therein, each of the schedule data including (b1) a timing at which a channel driver controls a media server, (b2) a content of how the channel driver controls the media server, and (b3) a timing type indicating which one of a time and the event the timing is defined by, and (c) a controller which detects whether a timing is established for each of the schedule data included in the distribution schedule information, and transmits a signal to the channel driver, the signal being indicative of a control associated with the established timing.

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> Identification of an attacker in an electronic system

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