Description
2.2 Setting up PROFINET
PROFINET with STEP 7
40
Function Manual, 05/2021, A5E03444486-AL
Definition of security
Generic term for all the measures taken to protect against:
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Loss of confidentiality due to unauthorized access to data
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Loss of integrity due to manipulation of data
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Loss of availability due to destruction of data, for example, through faulty configuration
and denial-of-service attacks
Threats
Threats can arise from external and internal manipulation. The loss of data security is not
always caused by intentional actions.
Internal threats can arise due to:
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Technical errors
•
Operator errors
•
Defective programs
Added to these internal threats there are also external ones. The external threats are not
really any different to the known threats in the office environment:
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Software viruses and worms
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Trojans
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Man-in-the-middle attacks
•
Password Phishing
•
Denial of Service
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