What’s the new 'background security' on the iPhone? What we know.
Apple has released a new security protection for its devices, called Background Security Improvements, which works in the background between major software updates. The improvements provide lightweight security releases for Safari, system libraries, and WebKit framework stack, and are supported by iPhones, iPads, and Macs with compatible software versions.
Apple has introduced a new security feature called Background Security Improvements. This feature provides constant security protection between major software updates. The first improvement was released on March 17 and targeted a cross-origin issue in the Navigation API. It affected Webkit, which includes Apple's Safari, Mail, and App Store apps. Background Security Improvements are supported by iPhones with iOS 26.1, iPads with iPadOS 26.1, and Macs with macOS 26.1. Users can turn off this feature in their device's settings, but it will be set to automatically install by default.
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