I have read that many iOS exploits target the Safari browser. Would using another browser on my iOS device be safer? Does Safari being a system app give it more access to the OS than a third party browser that I install through the App Store?

  • As far as I know, Apple forces all alternative browsers on iOS to use the same engine as Safari anyways. Think of "third-party browsers" as "Safari but with a different UI". – MechMK1 Sep 19 '19 at 19:47
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    Per @MechMK1's comment, "Firefox has to use the built-in iOS WebKit-based rendering framework instead of Gecko" --en.wikipedia.org/wiki/Firefox_for_iOS – Lucas Ramage Sep 19 '19 at 20:33

Basically not, since all 3rd party browsers on iOS use the webkit engine.

A simple way to demonstrate that is with CSS stylesheets, any browser specific attributes such as -moz won't be rendered on the Firefox iOs app. Only the non vendor-specific css or webkit attributes.

Therefore all potential vulnerabilities webkit has, apply to all browsers inside the iOs ecosystem.

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