To perform this coordination a secure communication
channel should be established between participants
using a shared session key agreed with all participants. The
protocol should allow only legitimate members of the attack to
participate (prevent adversaries’ interference). The time should
be synchronise just before triggering the attack (the final step
of the protocol) to allow participants to start attacking almost
simultaneously in order to make an effect. Attackers should not
raise suspicion to avoid detection; therefore, the used amount
of covert channel should be reduced to the minimum effective
rate. The freshness of messages should be guaranteed to defend
replay attack. After the last check of still alive participants, the
attack should be started as quickly as possible to avoid losing
attack members with time and to avoid changing the expected
workload pattern.