Castlepoint Cyber Security vs Microsoft Purview Information Protection: Side-by-Side Comparison (2026)

Castlepoint Cyber Security: AI platform for data classification, security labeling, and risk management. built by Castlepoint Systems. Core capabilities include Content-based data classification across formats and locations, Automated detection and labeling of CUI and classified data, PII, PCI, and PHI sensitive data detection..

Microsoft Purview Information Protection: Data classification and protection solution for Microsoft environments. built by Microsoft. Core capabilities include Data discovery across on-premises file shares, SharePoint, OneDrive, Exchange, Microsoft Teams, and endpoints, AI-powered trainable classifiers for automatic data classification, Hundreds of pre-built sensitive information types..

Both serve the Data Classification market but differ in approach, feature depth, and target audience.

Castlepoint Cyber Security differentiates with Content-based data classification across formats and locations, Automated detection and labeling of CUI and classified data, PII, PCI, and PHI sensitive data detection. Microsoft Purview Information Protection differentiates with Data discovery across on-premises file shares, SharePoint, OneDrive, Exchange, Microsoft Teams, and endpoints, AI-powered trainable classifiers for automatic data classification, Hundreds of pre-built sensitive information types.

Castlepoint Cyber Security is developed by Castlepoint Systems. Microsoft Purview Information Protection is developed by Microsoft. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Castlepoint Cyber Security and Microsoft Purview Information Protection serve similar Data Classification use cases: both are Data Classification tools, both cover Sensitive Data. Review the feature comparison above to determine which fits your requirements.