1. Turn on 2-Step Verification for every Google account that has access to your Play Console - Google recommends it as the single most effective protection for a developer account, and a verification code is required whenever a user signs in from a new device.
2. Play Console has three access levels: Account owner, Admin (all permissions), and User (granular, per-app permissions). Your access level determines what actions you can perform and what information you can see.
3. The account owner is the only person who can link a payments profile (required to sell paid apps) and the only one who can access and edit the Payments settings page - treat this credential as the account's core asset.
4. Admins can invite and remove users and manage individual permissions, at account level or per app; they do not need to pay the $25 registration fee.
5. Grant least-privilege access: give each team member only the apps and permission sets they need (e.g. View app information read-only) instead of blanket admin access.
6. Set an access expiry date when inviting temporary users (contractors, QA, auditors) so their access auto-revokes, and remove users promptly when someone leaves the team.
7. Admins with global access can review the Activity log to track changes made in Play Console - audit it regularly to catch suspicious modifications early.
8. Never share the account owner's login. Invite users with their own Google accounts instead - shared credentials destroy the audit trail and are a top account-takeover vector.