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Apple Now Sending Critical Security Alerts to iPhones Running iOS 17 and Earlier
https://www.macrumors.com/2026/03/27/critical-security-alerts-sent-to-ios-17-iphones/Apple has begun pushing Lock Screen notifications to iPhones and iPads running older versions of iOS and iPadOS, warning users of active web-based attacks.
The alerts, which appear as a "Critical Software" notification from the Settings app, warn that Apple "is aware of attacks targeting out-of-date iOS software, including the version on your iPhone," and urge users to install a critical update to protect their device. The notifications are being seen on devices running a range of older iOS versions, including iOS 17.0, far beyond the iOS 13 and iOS 14 devices that Apple specifically flagged in its support documentation.
Apple released iOS 15.8.7 and iOS 16.7.15, along with corresponding iPadOS versions, on March 11 to address security vulnerabilities associated with the Coruna exploit kit. Devices running the latest updated versions of iOS 15 through iOS 26 are already protected, while devices on iOS 13 or iOS 14 must update to iOS 15 to receive these protections.