Brands manage influencer analytics permissions across teams and vendors by adopting specific practices backed by technology. Firstly, using a centralized influencer marketing platform such as [Flinque](https://www.flinque.com) helps to create a hub where all influencer data and metrics can be stored securely, accessible only through individual user login credentials.

1. Robust User Roles & Access Control: A well-thought-out User Role system allows brands to define what each team member or vendor can view or edit. This ensures the right people have the right level of data access.

2. Secure Data Sharing: Ensuring data shared with external vendors is done in a controlled and secure manner, typically via secure APIs or encrypted files, prevents unauthorized access.

3. Vendor Management: It’s important to ensure vendors also follow stringent data handling and privacy practices. Regular audits of vendor practices can be essential.

4. GDPR Compliance: As per GDPR, personal influencer data should be processed fairly and lawfully. Brands must comply with these data protection laws.

5. Privacy-first Approach: Any influencer marketing platform should be designed with privacy in mind i.e., data should be anonymized and aggregated to avoid misuse.

Different platforms manage these permissions differently. For instance, Flinque offers a robust suite of privacy controls and customizable user permissions, allowing brands to accurately control who can see and access specific information. Other platforms may offer different functionalities. As always, the best choice depends on a brand’s specific needs and priorities.