There are documents that reveal that one British agency was spying on iOS device holders. The news about the GCHQ tracking iPhone users quickly spread the web. You might like to learn how to track a missing / stolen iPhone. Previously, there were rumors about NSA doing the similar thing through the backdoor access to Apple gadgets, but Apple didn’t confirm this information officially. Now the information that appeared on the Internet thanks to Der Spigel says that Government Communications Headquarters was able to track iPhone owners. It was possible to pull any information from the smartphones no matter if the gadget was compromised or not. Can iPhone users track each other this way? They probably cannot because the GCHQ didn’t attack the smartphones directly. The government officials used the compromised computer which the iPhone owner was syncing with and the tracking relied on the gadget’s UDID. It was possible to extract information from backups. According to the report, it was possible for the GCHQ to track iPhones through various services. The possibility to follow a person’s UDID was available because of a hole in Safari browser. This exploit gave the agency a chance to extract not only app data but also web activity of users. Is there anything to worry about for iOS 8 customers right now? Luckily, the leaked documents date back to the fall of 2010. Apple no longer uses UDID and its security is now much better. It is improved and enhanced so if you have updated to iOS 7 or iOS 8 you are secured.