ABSTRACT
These days, more and more automation systems, both systems for automating manufacturing processes and for controlling critical infrastructure installations, for example, in power and water utilities, are directly or indirectly connected to public communication networks like the Internet. While this leads to productivity improvements and faster reaction on market demand, it also creates the risk of attacks via the communication network. This chapter surveys how network-connected plants and automation systems can be secured against information system and network-based attacks by state-of-the-art defensive means, and it will provide an outlook on future research.
