Coverage Mapping Is Not a Strategy
Most security teams have a MITRE ATT&CK heatmap. Fewer have a clear plan for how to improve it. The teams that use ATT&CK most effectively treat it as a navigation tool, not a report card. The question is not what percentage of techniques you cover. It is whether you cover the techniques most likely to be used against you.
Threat-Informed Defense in Practice
Start with your threat model, not the ATT&CK matrix. Identify the threat actors most likely to target your organization based on industry, geography, and asset profile. Map their known TTPs using ATT&CK Navigator. Then assess your detection coverage against that specific threat profile, not against the full matrix.
- Financial services organizations: focus on Initial Access via phishing and credential theft
- Healthcare: prioritize Ransomware precursor techniques and data exfiltration
- Technology companies: supply chain compromise and insider threat detection are critical
- Critical infrastructure: ICS-specific techniques in ATT&CK for ICS deserve dedicated coverage
Turning Coverage Gaps Into Detection Projects
A coverage gap identified against your threat model is a detection project with a defined scope and a clear risk justification. This framing makes prioritization easier and makes the case for detection engineering investment more concrete than a generic coverage improvement argument.
Validation Without a Red Team
Atomic Red Team provides a library of small, targeted tests for individual ATT&CK techniques. Running these tests against your detection infrastructure quarterly gives you empirical coverage data that self-reported heatmaps cannot provide. A technique that shows green on your heatmap but fails its atomic test is a gap dressed as coverage.
The Coverage Conversation With Leadership
Leadership conversations about ATT&CK coverage work best when framed around specific threat actors, not abstract percentages. Telling your CISO that you cover 67% of ATT&CK techniques is meaningless. Telling them you have detection coverage for all known techniques used by the top three threat actors targeting your sector is a security posture statement.