In Power BI development company, data security is managed through encryption, access control, and compliance with data protection regulations. A Power BI development company should enforce row-level security (RLS) and role-based access control (RBAC) to limit data visibility. Utilizing Power BI service features like audit logs and activity monitoring ensures that data is tracked and any unauthorized access is flagged. Regular security reviews and vulnerability assessments are crucial to maintaining data integrity. Ensuring secure data handling practices builds client trust and aligns Power BI solutions with regulatory standards.