Preface   
1.2 Security information 
  CPU 410 Process Automation/CPU 410 SMART 
20  System Manual, 05/2017, A5E31622160-AC 
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Siemens provides products and solutions with industrial security functions that support the 
secure operation of plants, systems, machines, and networks. 
In order to protect plants, systems, machines and networks against cyber threats, it is 
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial 
security concept. Siemens’ products and solutions only form one element of such a concept. 
Customer is responsible to prevent unauthorized access to its plants, systems, machines 
and networks. Systems, machines and components should only be connected to the 
enterprise network or the internet if and to the extent necessary and with appropriate security 
measures (e.g. use of firewalls and network segmentation) in place. 
Additionally, Siemens’ guidance on appropriate security measures should be taken into 
account. For more information about industrial security, please visit: 
http:/www.siemens.com/industrialsecurity. 
Siemens’ products and solutions undergo continuous development to make them more 
secure. Siemens strongly recommends to apply product updates as soon as available and to 
always use the latest product versions. Use of product versions that are no longer supported, 
and failure to apply latest updates may increase customer’s exposure to cyber threats.