Security function of the business or physical process is protected by security system. Specific security system for the latter is the SIS (Safety Instrumented System).

When security system fails, its intended function fails too. It could be lost of view, view being manipulated, sub-standard product produced, high value asset damage, environment pollution and most seriously human fatality.

When assessing business impacts, we must not forget to assess the entire ecosystem including these auxiliary systems.

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