Application security depends on both technical controls and everyday account and data-management practices.
Apply least privilege
Grant only the menus, data scope, and operations required for a role. Avoid shared administrator accounts and review inactive access.
Minimize sensitive data
Do not collect unnecessary personal or confidential information, and never copy unmasked production data into test environments without controls.
Test recovery, not only backup creation
Keep separated recovery points, document owners and procedures, and run restoration drills to verify timing and completeness.