Security

A Kolmogorov Complexity Approach for Measuring Attack Path Complexity

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Executive Summary

The difficulty associated with breaching an enterprise net-work is commensurate with the security of that network. A security breach, or a security policy violation, occurs as a result of an attacker successfully executing some attack path. The difficulty associated with this attack path, then, is critical to understanding how secure a given network is. Currently, however, there are no consistent methods for measuring attack path complexity that make the assumptions of a modeler explicit while providing exibility in how the modeler models the attack path. To provide these desirable attributes, the authors propose a regular-expressions-inspired language whose rationale for attack path complexity measurement is based on Kolmogorov Complexity.

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