Articles
SIGIL – UK Classification Metadata Framework

Marketing and Outreach Team
15 Oct 2025
3 Min Read
Automated metadata tagging for defence and government content — enabling seamless, compliant handling of UK classified data.
The SIGIL Framework brings automated UK classification metadata tagging directly into modern data pipelines. Designed for defence, law enforcement, and central government agencies, SIGIL applies verified metadata to documents, messages, and datasets in real-time.
By combining AIC.Classifier with Microsoft Purview Information Protection, SIGIL delivers policy-aligned data control and traceability from desktop to cloud.
Every tagged file includes authoritative classification metadata (OFFICIAL / SECRET / TOP SECRET) and associated caveats. Integration with SharePoint Online, Exchange, and Azure Blob Storage allows security boundaries to be enforced automatically.
AIC’s tooling bridges compliance and productivity — enabling users to share, store, and audit information without compromising sensitivity. Visit the project page or review the NCSC handling guidance for more on aligning SIGIL deployments with your enterprise.
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Marketing and Outreach Team
AIC’s Marketing and Outreach Team builds visibility and trust across Defence and security. We deliver strategic campaigns, thought leadership, and stakeholder engagement while balancing transparency with discretion. Our mission is to position AIC as a trusted, innovative partner to the UK MoD and beyond.