From their origin with an email engine in 1993, to the addition of the more secure Data Protection keychain supporting passkeys and much more.
keychain
Authentication dialogs differ on Macs with Touch ID support, although they can still use a traditional format. Here are different versions of the dialog and explanations.
Which passwords, passkeys, wi-fi passwords, and so on are supported by Sequoia’s new Passwords app? Where has Keychain Access gone, and do you still need it?
Differences between file-based keychains including the login keychain, and Data Protection keychain. How the Passwords app in Sequoia caters for the latter.
Killed by Jupiter’s thunderbolts when she insisted he proved his identity, this myth is a reminder that making something more secure isn’t always a good answer.
Malware tries to trick you into providing it your password. How to recognise genuine requests from those fakes.
Do you want a Password Manager that can use a local, standalone vault, or share one using iCloud, Dropbox, or another cloud service of your choice?
iCloud Keychain is apparently the way ahead, but even Apple has a great deal more work to do before that’s feasible. A look at what’s needed.
How is an attacker most likely to get their hands on the secrets stored in your Mac’s keychains, and what can you do to protect them?
We’re swimming upstream in a raging torrent of alerts and notifications. Rather than clicking through everything, macOS should lead by example and do what we did with traffic signs.
The Eclectic Light Company 