FaceNiff — a well-known application in certain circles on the Android OS that allows you to scan and intercept Internet sessions. The functionality of the utilities will provide an opportunity to hack into the accounts even if an encrypted network (WPA2). FaceNiff is used to intercept web sessions. The application works as follows. You connect to a public Wi-fi network. The utility scans the shared access point and determines the sessions available for interception. The user selects the “victim” and, after seconds of waiting, can already send messages on behalf of the “victim” from her account in the social network or forum, make orders on the site, as well as carry out other illegal actions.