A well organized criminal group is targeting both iOS and Android users with highly targeted man-in-the-middle attacks, according to a new threat advisory from Akamai Technologies, Inc. For example, they were able to target a group of individuals congregating in an Asian country based on their communications, and then used man-in-the-middle and social engineering to trick users into installing the Xsser mobile remote access Trojan on their mobile devices. Soto said he wasn't allowed to reveal any more information about that particular attack, but did say that the criminal group involved was highly sophisticated.