Digital Trends – A security firm named Dasient studied 10,000 applications for Android smartphones and found that more than 8 percent of the applications are transmitting personal user data to unauthorized computers. This form of malware is designed to take control of a userâs smartphone. For instance, eleven of the malware-filled applications automatically sent text messages to entire contact lists, much like email spammers taking control of another account. If a user pays for SMS messages rather than an unlimited plan, it can easily rack up charges without any interaction from the user besides downloading the application.