Cyber Risk Re-Analysis by Attack Route Phase Selection
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Solution Overview
Problem
Re-analysis of risks following the implementation of cyber-attack countermeasures is time and manpower intensive, and it is difficult to determine whether the attack route has disappeared or the risk is merely reduced, necessitating unclear security tests.
Innovation Solution
A risk analysis apparatus and method that includes configuration information acquisition, threat analysis, attack route generation, risk value calculation, and risk re-analysis means to efficiently determine the impact of security measures on system risks, allowing targeted re-analysis based on the introduced countermeasures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If re-analysis of risks is performed to confirm how risks change after countermeasures are introduced, then the accuracy of risk assessment is improved, but the time and manpower required increase significantly
Solution Approach 1:
The risk analysis process is segmented into distinct phases (configuration information acquisition, threat analysis, attack route generation, risk value calculation). The re-analysis function selectively re-executes only the necessary segments based on what countermeasures were implemented, rather than performing a complete re-analysis from scratch. This segmentation allows for efficient resource utilization while maintaining assessment accuracy.
Solution Approach 2:
The system performs preliminary risk analysis before countermeasures are introduced, establishing a baseline state. When countermeasures are implemented, the system compares the new state against this preliminary analysis results to determine which specific phases need re-execution. This preliminary action enables the system to avoid redundant analysis while maintaining accuracy.
2Reliability
If complete re-analysis is performed to determine whether attack routes disappear or risk is merely reduced, then the reliability of security evaluation is improved, but the complexity of the analysis process increases
Solution Approach 1:
The re-analysis process is made dynamic and adaptive rather than static and fixed. The system automatically determines which phases of analysis need to be re-executed based on the type of countermeasure implemented. For example, if a countermeasure addresses a specific vulnerability, only the threat analysis and risk value calculation phases may need re-execution, while configuration information acquisition can be skipped. This dynamic approach maintains reliability while reducing complexity.
Solution Approach 2:
The system incorporates feedback mechanisms where the results of countermeasure implementation are fed back into the analysis process. The re-analysis function uses this feedback to intelligently determine which phases require re-execution. This feedback loop ensures that the analysis remains reliable by focusing on the specific areas affected by countermeasures, rather than requiring complete re-analysis of all system aspects.
3Measurement precision
If security tests are drafted based on planned countermeasures to evaluate system changes, then the thoroughness of risk assessment is improved, but the cost and time consumption increase
Solution Approach 1:
Instead of performing excessive complete re-analysis, the system applies partial action by selectively re-executing only the necessary analysis phases. The re-analysis function determines the appropriate scope based on the countermeasure type and impact, performing just enough analysis to achieve thorough assessment of affected areas without the waste of complete re-analysis. This partial action approach maintains assessment thoroughness while improving productivity.
Data Source
AI summary
A configuration information acquisition means acquires configuration information of a system to be analyzed. A threat analysis means analyzes a way of attack that can be implemented in the system to be analyzed. An attack route generation means generates an attack route from the start point to the end point of the attack. A risk value calculation means calculates a risk value of the generated attack route. A result output means outputs a risk analysis result containing the calculated risk value. A risk re-analysis means causes re-analysis of risks for the system in which a security measure planned for the system is introduced to be performed from any one of the configuration information acquisition means, the threat analysis means, the attack route generation means, and the risk value calculation means to conduct re-analysis of risks depending on the security measure planned for the system.