The continuous nature of risk assessment
Risk assessment in the context of SISs and ICSs is not a one-off activity but a continuous, cyclic process. This is primarily due to the dynamic nature of both the technological environment and the threat landscape. System configurations, technological developments, employee behavior, and external threat factors are all variables that can change over time, affecting the risk profile of the system.
Regular updates to risk assessments are, therefore, crucial to maintaining an accurate picture of the security posture of the SIS or ICS. Changing network configurations, implementing new software or hardware, identifying new vulnerabilities, or the emergence of new types of cyber threats are all reasons to update a risk assessment. Further, maintenance activities, system upgrades, and significant changes in operating conditions or organizational structure may also necessitate a review. Regular reviews and updates help to ensure that the risk mitigation...
