Many iOS devices could be vulnerable to a specific issue called the  “masque” attack. This basically allows hackers to get into your phone and hijack traffic, as well as disable communication between apps. The way to acquire the malware is through a third party app installer. Many companies use this to install apps that aren’t on the official app store. The hackers disguise their malicious app as something that may be needed. The apps have hidden software allowing them to bypass user control. Apple released a software update in January to help fix this issue (iOS 8.1.3), but one third of devices are still on an earlier iOS. This will not affect many personal use phones, but company phones could be at risk. The best way to eliminate this issue is to update to the newest OS, 8.4.