If people, machinery and industrial processes are intelligently linked, these networks are also more susceptible to attack. The Pilz SecurityBridge protects the configurable, safe small controllers PNOZmulti and the automation system PSS 4000 from network-based attacks and unauthorised access. Plant and machinery are thus not only safe, but also secure, which ensures the safety of employees and increases the availability of the machinery. Safety needs to do both – not only ensure protection for humans and machinery, but also offer the necessary degree of flexibility and availability in the smart factory.