Ars Technica reported on how the NSA and allies exploited Google and Samsung’s app stores.

In 2011 and 2012, the NSA and the communications intelligence agencies of its “Five Eyes” allies developed and tested a set of add-ons to their shared Internet surveillance capability that could identify and target communications between mobile devices and popular mobile app stores—including those of Google and Samsung. According to an NSA document published by the Canadian Broadcasting Corporation, the targeting capability could have been used to launch “man-in-the-middle” attacks on mobile app downloads, allowing the NSA and other agencies to install code on targeted devices and gather intelligence on their users.

Apple’s App Store is conspicuously missing.