During August 2025, Daria Bukharmetova enhanced permission controls in the diadoc/diadocsdk-csharp and diadoc/diadocsdk-java repositories by introducing a CanAttachUniversalMessages flag to OrganizationUserPermissions. She updated protobuf schemas and generated code in both C# and Java, ensuring cross-language consistency for this new access control feature. Her work focused on backend and API development, enabling granular, policy-driven management of universal message attachments. By prioritizing protocol buffer updates and SDK parity, Daria laid the groundwork for improved security and compliance. The depth of her implementation supports scalable, customer-specific permission models without introducing bugs, reflecting careful engineering and attention to maintainability.