Fix backend credential exposure

[kusssal]

List of changes

• Change: /backend/src/api/bd/controllers/bd.js

Checklist

• related issue
• My changes generate no new warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the changelog
• I have added tests that prove my fix is effective or that my feature works