Aerospike 5.1, released in July 2020, focuses on enhancing security in its Enterprise Edition, chiefly through a new Identity and Access Management (IAM) system based on users and roles. This update allows for the integration of HashiCorp Vault to secure and manage sensitive information such as passwords and encryption keys, thereby reducing the potential attack surface and aligning with enterprise-wide security policies. The release addresses the evolving security landscape, including sophisticated cyber exploits and the challenges of cloud-based environments, by providing flexible, centrally managed IAM policies. Additionally, Aerospike 5.1 introduces permission changes for truncate commands, security enhancements for User-Defined Functions (UDFs), and various minor features such as improved histogram commands and configuration parameters for data replication. These changes are designed to improve administrative flexibility, security, and performance, while maintaining backward compatibility and supporting upgrades and downgrades between versions.