A Novel Attack-and-Defense Signaling Game for Optimal Deceptive Defense Strategy Choice

Figure 4

In the signaling game tree for the reverse direction, nature assigns type with probability and type with . The attacker can send either signal (signaling that the attacker is of type) or (signaling that the defender is of type ). The defender will revise her judgement on the type of the attacker by selecting if observing signal and if observing signal as the posterior probability for the type of the attacker . denotes eight outcomes, where each outcome results in the corresponding payoff.