I was completely shocked when I found all my keychain passwords on my friend's iMac, he's signed under his own Apple ID but all my passwords saved in his keychain!!! how do I stop sharing my keychain with another Mac?
iMac Line (2012 and Later)
You shared your key chain with their Mac when you signed in with your Apple ID on it. Logging in with your Apple ID to a computer grants it access to all the data on your Apple ID. If you don't want to share your key chain, then don't do things that get your key chain shared
If you've signed out, then they are no longer shared, but would then need to be deleted manually from the computer.
What to do after you change your Apple ID or password - Apple Support I suggest doing this before you change your Apple ID or password.
iCloud Keychain does not have a password of its own. It uses your Apple ID password. You can change that password if you want.
If you have signed out of the computer entirely, including iCloud Preferences, and anywhere else you may have signed in on the computer, then yes, there is no more access to your account.
If you signed into System Preferences/iCloud and Keychain syncing was on, your passwords probably synced from your iCloud Keychain.
That’s what I did. I deleted all passwords manually from his keychain ( which I found out it has both my passwords and his) does that guarantee that he won’t have access to my passwords anymore!
If I change my keychain log in password, it helps?
Thanks
Have either one of you ever signed in with your ID?
yes I did. And I signed back out!
KEYCHAIN SHARED WITH ANOTHER Apple ID
