How to prevent file sharing automatic connection with the commune iCloud account?

I have access to my Mac remotely and always assumed that if I did not check the box pw to remember when asking username/pw I would always need to enter pw to access a remote volume.  This, of course, is the case usually except that I noticed that I have three computers (home, office, mobile) with the same user name and I can connect to the remote volume by simply entering the IP address of the target computer. I receive no request for pw.  This occurs despite the Macs with different user pw. I went to keychain in public services and did ' t see the pw of file sharing, so I guess they are in iCloud keychain.  All 3 Macs have the same username and the same iCloud account, and I have iCloud Keychain selected on all 3 Macs.  Potential problems would be if someone stole my cell phone when I signed to or if someone at work was playing with my computer after hours - they can then access my home computer (or vice versa). If it is stored in iCloud Keychain, so I don't see an obvious way to change.  So I disabled the option of trousseau in iCloud in system preferences on my laptop, not saved in keychain to my Mac and restarted; When I tried to access my home Mac, it helped to connect without my pw but I have noticed that at the top of the window, text says 'connected as [email protected]'- real username omitted here.  Is anyway to avoid this short of having each Mac journal on an account different iCloud (then would lose Sync calendars etc.). Thank you

What tool do you use to access other Macs?

Built-in screen sharing?

Tags: iCloud

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