  Network systems are one of the most active research areas in the engineering
community as they feature a paradigm shift from centralized to distributed
control and computation. When dealing with network systems, a fundamental
challenge is to ensure their functioning even when some of the network nodes do
not operate as intended due to faults or attacks. The objective of this paper
is to address the problem of resilient consensus in a context where the nodes
have their own clocks, possibly operating in an asynchronous way, and can make
updates at arbitrary time instants. The results represent a first step towards
the development of resilient event-triggered and self-triggered coordination
protocols.
