NIST 800-171 Implementation Guide for Defense Contractors

A practical NIST SP 800-171 implementation guide covering CUI scoping, requirement mapping, remediation, SSP documentation, evidence, and continuous review.

Define the CUI environment

Identify where Controlled Unclassified Information enters, is stored, processed, transmitted, backed up, and accessed. Map users, systems, providers, integrations, and administrative paths.

Assess requirement by requirement

For each applicable requirement, document the current implementation, owner, evidence, gap, dependency, and remediation task. Avoid marking controls complete based only on a policy statement.

Prioritize foundational controls

Identity, access, asset inventory, configuration, logging, endpoint security, backups, and incident response influence many other requirements. Sequence remediation so foundational work supports later controls.

Make documentation match operations

Your SSP, policies, diagrams, inventories, and procedures should reflect the environment that actually exists. Keep records current as systems and responsibilities change.

Create a recurring review cycle

Assign ownership for control verification, evidence updates, issue tracking, vendor changes, and technical maintenance so the program remains current after the initial project.

Need help implementing this?

Hatty AI can help assess the current environment, prioritize the next steps, implement the technical work, and document the system so your team has a clear operating plan.