1Security Monitoring Tool vs Legato SIEMaaS: Side-by-Side Comparison (2026)

1Security Monitoring Tool

Mid-market and enterprise teams managing Microsoft 365 environments need visibility into user behavior anomalies and permission changes that native Microsoft tools leave blind, and 1Security Monitoring Tool delivers that through continuous activity monitoring across Entra ID, Exchange, SharePoint, and OneDrive with real-time alerting on suspicious patterns. The tool covers NIST DE.CM and DE.AE functions effectively, meaning you get detection and analysis of anomalies in place, though incident response orchestration remains your responsibility. Skip this if your organization runs minimal Microsoft 365 usage or lacks the analyst capacity to act on behavioral alerts; the tool surfaces problems but doesn't automate remediation.

Legato SIEMaaS

SMB and mid-market teams without dedicated SOC staff should pick Legato SIEMaaS for its fully managed model; you get 24/7 monitoring and incident response workflow automation without hiring three analysts. Compliance reporting is audit-ready out of the box for SOC 2, HIPAA, and PCI DSS, cutting weeks off your certification cycles. Skip this if you need deep forensics and investigation tools; Legato prioritizes detection and real-time alerting over the kind of recovery-focused incident analysis that enterprises running their own SOC typically demand.