What Is Dialer Spyware?
Dialer spyware is a category of software that, while occasionally used for legitimate purposes (though less so now than in the age of more prevalent dial-up use), is typically meant to affect the infected in a malicious way. These programs connect your computer directly to the Internet through the modem, by way of a phone line. The point of a malicious dialer is usually to connect your phone line to an expensive toll number and then rack up exorbitant charges, with the victim being wholly unaware until the phone bill arrives.