To address the concerns about data security and governance when implementing a self-service BI platform, I would recommend taking the following steps:  Establish clear data governance policies and procedures, including roles and responsibilities, access controls, and data quality and security standards, to ensure that the data is managed and used appropriately.  Implement technical measures, such as data encryption and secure data storage, to protect the data from unauthorized access or tampering.  Provide training and support to users of the self-service BI platform to ensure that they understand the data governance policies and how to use the platform securely.  Monitor and enforce compliance with the data governance policies, including conducting regular audits and reviews to ensure that the data is being used appropriately.  Communicate the data governance policies and practices to stakeholders and involve them in the development and review of the policies to ensure that they are aligned with the needs of the organization.