Cloud accounts · Passwords, keys and privacy
Can other users on my Mac use my connected cloud accounts?
Short answer: No — connected accounts belong to your own macOS user, so someone signed in as a different user doesn't get them. Anyone using your logged-in user can, so lock your screen when you step away.
Your accounts belong to your own macOS user. Another person who signs in to the Mac with their own user account doesn't get your connected accounts in their Storage Studio.
Anyone using your own logged-in user account can, of course, use the app as you. Lock your screen when you step away, and remove accounts you no longer need.