Power BI developers address data security challenges by implementing robust measures that protect sensitive information. They configure Row-Level Security (RLS) to restrict data access based on user roles, ensuring confidentiality. Power BI developers use secure connections and encryption protocols to safeguard data during transfer and storage. By adhering to industry regulations like GDPR, HIPAA, or CCPA, they ensure compliance. Regular audits and automated monitoring tools detect anomalies or unauthorized access. Additionally, centralized data models and governance frameworks maintain data integrity and consistency. These practices provide businesses with secure analytics environments, fostering trust and confidence in their business intelligence systems.