# Towards Security Joint Trust and Game Theory for Maximizing Utility: Challenges and Countermeasures
## 3 Game Theory in Networks
Combining the non-cooperative game model with trust management enables peers in the intrusion detection network to collaborate truthfully and actively [47]. In wireless sensor networks, the introduction of game theory improves the defense's strategy and helps the network against malicious nodes [30]. In a network with mobile users/terminals, the introduction of a game model can improve the utility of mobile users [49; 50]. In merchant transmission planning, the introduction of game theory can improve social efficiency [20; 22]. In [24], a resource scheduling method for \begin{table}
\begin{tabular}{c c c c} \hline \hline
**Dynamic Game** & **Static Game** & **Non-Cooperative Game** & **Cooperative Game** \\ \hline [PERSON] [32] & & & & \\ [PERSON] et al. [33] & & & & \\ [PERSON] [34] & & & & \\ [PERSON] et al. [35] & & & & \\ [PERSON] and [PERSON] [36] & & [PERSON] et al. [47] & [PERSON] et al. [52] \\ [PERSON] and [PERSON] [37] & & [PERSON] et al. [48] & [PERSON] et al. [53] \\ [PERSON] et al. [38] & & [PERSON] et al. [49] & [PERSON] et al. [54] \\ [PERSON] et al. [39] & & [PERSON] et al. [46] & [PERSON] et al. [51] & [PERSON] et al. [55] \\ [PERSON] et al. [40] & & [PERSON] et al. [19] & [PERSON] et al. [24] & [PERSON] et al. [56] \\ [PERSON] et al. [41] & & & & \\ [PERSON] et al. [42] & & [PERSON] et al. [20] & [PERSON] et al. [58] \\ [PERSON] et al. [43] & & [PERSON] et al. [22] & [PERSON] et al. [59] \\ [PERSON] et al. [44] & & & & \\ [PERSON] et al. [45] & & & & \\ [PERSON] et al. [31] & & & \\ [PERSON] et al. [18] & & & \\ [PERSON] et al. [29] & & & \\ \hline
**Security Game** & **Trust Game** & **Others** & \\ \hline  & & [PERSON] et al. [70] & \\  & & [PERSON] et al. [71] & \\  & & [PERSON] et al. [72] & \\  & & [PERSON] et al. [47] & \\ [PERSON] et al. [60] & & [PERSON] et al. [75] & \\ [PERSON] et al. [61] & & & \\ [PERSON] et al. [68] & & [PERSON] et al. [77] & \\ [PERSON] et al. [62] & & [PERSON] et al. [69] & [PERSON] et al. [78] \\ [PERSON] et al. [63] & & [PERSON] et al. [6] & [PERSON] et al. [79] \\ [PERSON] and [PERSON] [64] & & & \\  & & & \\ [PERSON] and [PERSON] [64] & & & \\  & & & \\  & & & \\  & & & \\  & & & \\ \end{tabular}
\end{table} 
Table 1: Examples of games based on their types. guaranteeing resource utilization and service performance is presented, maximizing the profits of players. The cooperative game is introduced into the network, which enables the network to maintain high security against malicious attacks and reduce malicious services [52; 57; 58; 59]. In device-to-device communication, game theory is combined with social ties or social trust. It is used to promote efficient cooperation among devices in the network to improve network performance [53; 54; 56]. In some servers or authentication protocols, a security game is often introduced. The introduction of game theory improves security in systems or protocols [60; 61; 64]. In the system with information exchange, the establishment of the game model ensures the safe and reliable transmission of information [62; 63]. In multi-agent systems, the trust issues of all parties are often involved. Finding a reliable agent in the system is crucial. The introduction of trust games into these systems has greatly helped the trust decisions in the system [66; 68; 69]. The introduction of trust game has provided dynamic decision-making for network proactive defense [6]. Some researchers have proposed specific game models for corresponding systems. Combining the game model with the trust relationship improves the reliability of the data in the network [75; 76; 80]. The introduction of the game model improves the security of the network and against external and internal attacks [14; 70; 72; 74; 77]. There are also some game models that provide great help for network or system strategy selection [27; 71; 78; 79; 81], or addressed the problem of resource allocation [26]. In [28], the introduction of game theory optimizes the probability of successful transmission probabilities of data and the caching probabilities in some networks.