Microsoft Purview Data Loss Prevention is a commercial data loss prevention solution by Microsoft. Theodosian is a commercial data loss prevention solution by Theodosian. Features, integrations, deployment and the company behind each one, side by side.
Prevents unauthorized sharing and transfer of sensitive data across devices
File-level encryption and access control for data-centric security
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Based on what each listing shows: deployment, company size, price and open source.
Microsoft Purview Data Loss Prevention fits if you want a cloud product.
Theodosian fits if you need both cloud and on-premises options and you are a startup.
Common questions when comparing Microsoft Purview Data Loss Prevention vs Theodosian for data loss prevention.
Microsoft Purview Data Loss Prevention: Prevents unauthorized sharing and transfer of sensitive data across devices. Built by Microsoft.
Theodosian: File-level encryption and access control for data-centric security. Built by Theodosian.
The table above shows where their features, integrations, deployment and company size fit differ.
Microsoft Purview Data Loss Prevention is made by Microsoft. Theodosian is made by Theodosian. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Microsoft Purview Data Loss Prevention and Theodosian are both Data Loss Prevention products. Use the table above to see where features, deployment and company size fit differ.
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Updated 2026-11-02
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