Insufficient security is careless too much security is inefficient. Recent surveys point out
that the fear of cyber attacks is one of the three biggest business risks. Digitalization based
on cloud computing mobility or the internet of things are important drivers for pushing
productivity in industrial environments. Cybersecurity is a prerequisite for digitalization in
the industry. The importance of security protection concepts is growing with increasing
external attacks. Operators of critical infrastructure have to maintain minimum standards and
to protect their installations against cyber-attacks. Cybersecurity requires a holistic
approach. Effective protection concepts can only be implemented with a range of organizational
and technical measures. Product suppliers system integrators and operators have to work
together to deploy holistic protection solutions. The new edition describes the security
protection scheme in much more detail. A holistic protection includes a combination of
technology process and people aspects for the protection of industrial facilities during
operation. The series of standards IEC 62443 supports the development of holistic solutions for
the protection of industrial facilities and addresses all involved actors. Correspondingly IEC
62443 is perceived as complex. This guideline has the aim to simplify the approach to the
deployment of protection concepts by giving an overview about IEC 62443 summarizing the ideas
and concepts and illustrating practical solutions.
