Security experts from FireEye demonstrated that Hacking Team leveraged iOS vulnerability to install fake messaging apps implementing a Masque Attack. The attack was using a changed version of last years Masque attack, and the devices were infected by text messages or email. Even non-jailbroken devices could be exploited using the Mask Attack, which was already known and was implemented by the WireLurker malware, where the malware was taking advantage of a flaw that was patched last year. When installed the fake applications would execute commands and extract data from the devices.”]
Source: http://securityaffairs.co/wordpress/39185/hacking/hacking-team-ios-devices.html