
431
18
Intrusion Detection
Systems for (Wireless)
Automation Systems
Jana Krimmling and Peter Langendörfer
18.1 AUTOMATION SYSTEMS
This section rst introduces automation systems in general and then describes why automation
systems are traditionally insecure by regarding the history of automation systems. The security
mechanisms applied in traditional automation systems are weak if found at all. As long as automa-
tion systems have existed as isolated islands, they were reasonably well protected because physical
access to the systems was needed to launch an attack. Recently, more and more automation systems
are connected via the Internet to cent ...