This document summarizes the new features and enhancements in AlienVault 2.3, including a multi-tenant user architecture, enriched security taxonomy, improved reporting capabilities, vulnerability assessment upgrades, and network discovery enhancements. The professional version of AlienVault 2.3 adds multi-tenant support, entity-based user permissions, and remote network discovery execution. Compliance reports for standards like SOX, PCI DSS, and HIPAA are also now available.