1Security Microsoft Copilot Security vs Stoffel: Side-by-Side Comparison (2026)

1Security Microsoft Copilot Security: Monitors and controls Microsoft Copilot data access and oversharing risks in M365. built by 1Security. Core capabilities include AI Data Visibility Dashboard mapping all files and SharePoint sites Copilot can access via Microsoft Graph, Oversharing Detection identifying files and folders with excessive permissions risking data leaks, Sensitivity Label Analysis auditing Microsoft Purview labels to prevent unauthorized AI access..

Stoffel: Privacy-first app dev platform using MPC to compute on encrypted data. built by Stoffel. Core capabilities include Secure multi-party computation for encrypted data processing, Stoffel-Lang domain-specific language for privacy-preserving logic, StoffelVM runtime for executing computations on encrypted inputs..

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

1Security Microsoft Copilot Security differentiates with AI Data Visibility Dashboard mapping all files and SharePoint sites Copilot can access via Microsoft Graph, Oversharing Detection identifying files and folders with excessive permissions risking data leaks, Sensitivity Label Analysis auditing Microsoft Purview labels to prevent unauthorized AI access. Stoffel differentiates with Secure multi-party computation for encrypted data processing, Stoffel-Lang domain-specific language for privacy-preserving logic, StoffelVM runtime for executing computations on encrypted inputs.

1Security Microsoft Copilot Security is developed by 1Security. Stoffel is developed by Stoffel. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

1Security Microsoft Copilot Security and Stoffel serve similar Data Security Posture Management use cases: both are Data Security Posture Management tools. Review the feature comparison above to determine which fits your requirements.