1Security Monitoring Tool is a security monitoring platform designed for Microsoft 365 environments. The tool consolidates activity data from Entra ID, Exchange, SharePoint, and OneDrive into a unified view for security investigations and compliance audits. The platform monitors user behavior across Microsoft 365 services, tracking sign-ins, file downloads, external sharing, permission changes, and administrative actions. It maintains a historical record of user activities and admin changes for forensic analysis and audit requirements. The tool provides behavior-based alerting for anomalous activities such as impossible travel, unusual external sharing patterns, bulk downloads, and suspicious mailbox rules. It tracks privileged access changes including admin role grants, mailbox delegation, and SharePoint permission modifications. External sharing visibility features monitor when users create sharing links or invite guest users, showing what content is shared outside the organization. The platform includes reporting capabilities that generate compliance-ready documentation for frameworks including ISO 27001, SOC 2, HIPAA, and GDPR. The tool addresses Microsoft Copilot readiness by auditing overshared content and risky access paths before AI assistant deployment. It consolidates fragmented signals from multiple Microsoft 365 portals to reduce manual log correlation and CSV exports typically required for investigations.