How iCloud Keychain escrow security protects user data recovery
By
gurjeet
A second-rack bagel that's nearly first-rack. Tasty stuff.
Summary
Apple's iCloud Keychain uses a secure escrow infrastructure backed by hardware security modules (HSMs) to protect user keychain data. Recovery requires multi-factor authentication including iCloud account credentials, SMS verification to a registered phone number, and additional device authorization to ensure only authorized users and devices can access the escrowed keychain records.
Key quotes
· 3 pullediCloud provides a secure infrastructure for keychain escrow to help ensure that only authorized users and devices can perform a recovery.
Topographically positioned behind iCloud are clusters of hardware security modules (HSMs) that guard the escrow records.
To recover a keychain, users must authenticate with their iCloud account and password and respond to an SMS sent to their registered phone number.
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