Apple draws cloudy line on use of root certs in mobile apps

Apple’s removal of several apps from its mobile store on Thursday shows the challenges iOS developers can face when app guidelines shift.

Among the apps removed was Choice, developed by the Palo Alto-based company Been. The app interrupted encrypted traffic streams sent to a handful of companies, including Facebook, Google, Yahoo and Pinterest, in order to block in-app ads.

Apple said the apps, which it did not name, used root digital certificates that could expose data to untrusted sources.

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