applesupport and lockdown on iOS 16, here’s how and what it limits on Safari

applesupport with the new feature will need to have a lot of patience with customer! Do the back up iphone before try the new features in iOS 16 is lockdown, which helps users protect themselves from targeted cyber attacks by disabling multiple device features.

Software engineer Alexis Lours explained in detail what happens on Safari when this mode is active.

Lours shared on his personal blog back up iphone

The various tests he ran to find out which web features are actually disabled when isolation mode is activated and better doing back up iphone. Using Modernizr, a JavaScript library that detects functionality available in a web browser, the engineer discovered a list of WebKit features that can potentially be used to spy on users.

The first thing the engineer noticed is that lockdown disables just-in-time (JIT) JavaScript compilation, which compiles code on the fly as it runs so if you are try do the back up iphone. Without JIT enabled, web browsing performance drops by up to 95% based on benchmark tests. This results in longer load times and higher battery consumption.

applesupport will need to help clients

Lockdown in iOS 16 also disables WebAssembly this means that a lot of clients will contact the applesupport. WASM is a powerful binary code format that enables high-performance apps on web pages. However, it can also be used to create a user fingerprint, which helps third parties keep track of people on websites and apps.

Interestingly, support for MP3 players on web pages is disabled with this mode active. Lours believes applesupport wants to prevent attackers from using MP3 decoding for malicious purposes. Of course, this ends up breaking the functionality of any MP3 playing website without a fallback to AAC or OGG formats.

The Gamepad API, created to allow users to interact with game controllers on websites, does not work with lockdown Mode enabled. This is because malicious websites can use details such as the controller ID to track users. Unsurprisingly, this suspends the operation of games and web platforms that rely on an external game controller.

Previewing files in web browsers is also limited with this active mode.

For example, JPEG 2000 images and SVG fonts, which are only supported by Safari, are disabled, so websites can’t use these formats to target iOS users. PDF preview for websites is also disabled, as more exploits related to this format have been found in the past.

Other disabled features include WebGL, Speech API, and Web Audio API.

In addition applesupport limiting web browsing

Lockdown Mode in iOS 16 also blocks most message attachments and link previews in applesupport Messages app. Users with the mode enabled only receive FaceTime calls from known numbers and iCloud shared albums are removed from the Photos app and maybe next time they will add in the watch band.

applesupport also blocks configuration profiles and device access via a wired connection with lockdown mode enabled and before doing that do the back up iphone.

Obviously, applesupport points out that this mode is aimed at specific targets so do the back up iphone before use it , users who could be targeted by sophisticated espionage and cyber attacks, such as journalists, activists and members of the government.