Microsoft Purview Information Protection vs Castlepoint Cyber Security: 2026 Comparison

Microsoft Purview Information Protection

Mid-market and enterprise teams already deep in Microsoft 365 will find their fastest path to data classification here because Purview classifies and labels at scale without ripping out existing infrastructure. The AI-powered classifiers work across SharePoint, OneDrive, Exchange, and Teams simultaneously, and the exact data match capability catches structured data like credit cards and social security numbers that pattern-matching alone misses. Skip this if your data lives primarily outside Microsoft environments or if you need detection and response for data exfiltration; Purview excels at ID.AM asset discovery and PR.DS labeling but leaves incident investigation to other tools.

Castlepoint Cyber Security

Mid-market and enterprise teams drowning in unclassified data across email, cloud storage, and file shares need Castlepoint Cyber Security to actually know what they're protecting. The platform's content-based classification engine handles mixed formats and automatically detects PII, PCI, PHI, and regulated data like CUI without manual tagging, then maps legislative penalties to inform retention policy. Skip this if your data lives almost entirely in structured databases or you're looking for a DLP tool with blocking capabilities; Castlepoint excels at discovery and labeling, not prevention.