Emsisoft Anti-Dialer

Emsisoft Anti-Dialer provides a complete defense against dialers and scans all your files from your hard disks using the Dialer scanner.
The integrated background guard protects the PC from new infections. As soon as a potential Dialer creates or manipulates a dial up connection, the a-squared Anti-Dialer will alert it.
Dialers are small programs that change the Internet access number of a modem-equipped computer to a much more expensive number. Costs can rise as high as several hundred dollars per dial attempt. a-squared Free removes Dialers before they are becoming active.