  Cyber-physical systems are integrations of computation, networking, and
physical processes. Due to the tight cyber-physical coupling and to the
potentially disrupting consequences of failures, security here is one of the
primary concerns. Our systematic mapping study sheds some light on how security
is actually addressed when dealing with cyber-physical systems. The provided
systematic map of 118 selected studies is based on, for instance, application
fields, various system components, related algorithms and models, attacks
characteristics and defense strategies. It presents a powerful comparison
framework for existing and future research on this hot topic, important for
both industry and academia.
