Apple introduced Impersonation Risk Detection in iOS 27 and iPadOS 27, an opt-in privacy feature that helps participating apps identify actions potentially tied to active social-engineering or impersonation scams. The operating system assesses device-use, Apple Account, interaction, timing, contextual, and limited sensor-data signals locally, while excluding the contents of Photos, Messages, and Mail.
Supported apps receive only an unknown, medium, or high risk assessment rather than the underlying data. Developers can use that result to display warnings, delay sensitive transactions, or require identity verification before actions such as account-security changes or large payments. Users can control global and per-app access in Privacy & Security settings, though setting changes may take up to 24 hours to take effect; effectiveness depends on both user opt-in and app adoption.

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Apple introduced an opt-in, on-device feature enabling supported apps to request risk assessments for security-sensitive actions that may be associated with social-engineering impersonation scams. Apps receive only an unknown, medium, or high risk level and can independently warn users, require verification, or delay an action.
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