MITRE ATT&CK for ICS: Using It as a Coverage Gap Analysis

The most useful way to apply MITRE ATT&CK; for ICS is not as reading material -- it is as a structured gap analysis exercise you run against your own environment.

Step 1: Scope the relevant techniques

Not every technique in the matrix applies to every environment. Filter to the tactics and techniques that are realistic given your architecture, protocols, and known threat landscape.

Step 2: Ask three honest questions per technique

For each relevant technique: do we have a preventive control that would stop this? Do we have a detection use case that would reveal it? If neither, is that an accepted, documented risk or an unnoticed gap?

Step 3: Prioritize by consequence, not technique count

A gap in 'Impair Process Control' against a safety-critical asset deserves far more urgency than a gap in a discovery technique against a low-consequence monitoring segment. Weight your findings by what the technique could actually achieve in your environment.

Step 4: Revisit it

ATT&CK; for ICS is updated as new real-world techniques are documented. A coverage analysis done once and never repeated becomes stale exactly like any other point-in-time assessment.