Symantec’s Security Response team has found a privacy-infringing application called Call Cheater Lite that may also result in unwanted SMS charges. The purpose of this app is to block unwanted phone calls from certain individuals by giving the owner of the phone the ability to play any sound or pre-recorded message to an offensive or unwanted caller.
According to the application description, the user can configure the app to play a pre-recorded message or sound to make the caller believe that the phone is disconnected or out of service.
Additionally, there is code present that asks the user if they liked the app. If the user selects “yes”, the app asks the user if they would be interested in purchasing the full version, but if they dislike the app and select “no”, the app asks why the user does not like the app. Unfortunately, regardless of what the user does at this point, an international rate SMS message which is not free is queued for sending. It is then sent to a number located in India.