  Decentralized control systems are widely used in a number of situations and
applications. In order for these systems to function properly and achieve their
desired goals, information must be propagated between agents, which requires
connecting to a network. To reduce opportunities for attacks that may be
carried out through the network, we design an event-triggered mechanism for
network connection and communication that minimizes the amount of time agents
must be connected to the network, in turn decreasing communication costs. This
mechanism is a function of only local information and ensures stability for the
overall system in attack-free scenarios. Our approach distinguishes itself from
current decentralized event-triggered control strategies by considering
scenarios where agents are not always connected to the network to receive
critical information from other agents and by considering scenarios where the
communication graph is undirected and connected. An algorithm describing this
network connection and communication protocol is provided, and our approach is
illustrated via simulation.
