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Can You Scan CUI Documents Offline?
Learn how offline CUI document scanning works, what air-gapped environments require, and how to evaluate scanners that process documents locally.
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Learning Center
Practical guidance on classified and CUI markings, local document screening, offline workflows, and evaluating tools.
8 guides
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A practical first read
How to Check a Document for Classified or CUI Markings Before Sending It
A practical checklist for spotting classified and CUI markings, inspecting hidden document content, and escalating concerns before release.
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03
CUI Markings vs. Classified Markings: What's the Difference?
Understand the difference between CUI and classified national security information, including marking examples, protection requirements, and common misconceptions.
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What Happens When Classified Markings Appear in an Unclassified Document?
Discover what classified markings in an unclassified document may indicate, when to stop processing, and how to follow security incident procedures.
Read guide05
How to Prevent Sensitive Documents From Being Uploaded to AI Tools
Practical controls for keeping sensitive information out of unapproved AI tools, from browser uploads and agents to government systems.
Read guide06
Microsoft Purview vs. Lightweight Document Scanners: Which Do You Need?
Compare Microsoft Purview DLP with lightweight document scanners across security controls, deployment, local inspection, cost models, and use cases.
Read guide07
How to Verify a Document Scanner Doesn't Upload Your Files
Learn how to test whether document scanners upload files, extracted text, metadata, or findings through network, offline, and integration checks.
Read guide08
Best Document Screening Tools for Defense Contractors: What to Look For
Compare document marking scanners, enterprise DLP, classification-management tools, and local inspection utilities for defense contractor workflows.
Read guideStrike Gate identifies marking patterns for human review. It does not determine classification or authorize handling. Follow your organization’s approved procedures.