A dialer (US) or dialler (UK) is an electronic device that is connected to a telephone line in order to monitor the dialed numbers and alter them to seamlessly provide services that otherwise require lengthy access codes to be dialed. A dialer automatically inserts and modifies the numbers depending on the time of day, country or area code dialed allowing the user to subscribe to the service providers who offer the best rates.

Dialers are necessary to connect to the internet (at least for non-broadband connections) but some dialers are designed to connect to premium-rate numbers. The providers of such dialers often search for security holes that may be present in the operating system installed on the user’s computer and use them to change the computer to dial up through their number, pocketing the additional money for themselves. Alternatively, some dialers inform the user what it is that they are doing with the promise of special content, accessible only via the special number.

Users with DSLs (or similar broadband connections) are usually not affected. A dialer can be downloaded and installed, but dialing in is not possible as there are no regular phone numbers in the DSL network and users will not typically have their dial-up modem, if any, connected to a phone line. However, if an ISDN adapter or additional analog modem is installed, the dialer might still be able to get a connection.

Malicious dialers can be identified by the following characteristics:

  • A download pop-up opens when opening a website.
  • On the website there is only a small hint, if any, about the price.
  • The download starts even if the cancel button has been clicked.
  • The dialer installs as default connection without any notice.
  • The dialer creates unwanted connections by itself and without user interaction.
  • The dialer does not show any notice about the price (only few do) before dialing in.
  • The high price of the connection is not being shown while connected.
  • The dialer normally cannot be uninstalled, only with serious effort.

How Can You Detect Dialers? Check for Dialers with SpyHunter!

SpyHunter is a powerful malware remediation and protection tool designed to help provide PC users with in-depth system security analysis, detection and removal of a wide range of threats like Dialers as well as a one-on-one tech support service. Download SpyHunter’s Malware Scanner
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Note: SpyHunter's scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read more on SpyHunter. To understand our policies, please review our EULA, Privacy Policy and Threat Assessment Criteria. If you no longer wish to have SpyHunter installed on your computer, follow these steps to uninstall SpyHunter.

There are 24 articles listed on dialers.

Name Threat Level Detection Count Date
All-In-One Telcom 77/10 79 May 15, 2009
Desire Dialer August 16, 2012
Dialer:Win32/Adialer 88/10 5 September 24, 2012
Dialer.Dialpass December 22, 2010
Dialer.Siggen 77/10 21 March 30, 2011
Dialer.Tibs 77/10 January 27, 2010
Dialer.Xpehbam.biz_dialer 77/10 August 31, 2011
DyFuCA 77/10 846 May 15, 2009
Family Sex Dialer July 23, 2009
GMSoft Dialer May 15, 2009
GoInDirect 77/10 81 May 15, 2009
InstantAccess 55/10 306 May 15, 2009
Jab dialer April 12, 2011
Mainpean Stardialer August 16, 2012
MasterDialer 77/10 May 15, 2009
Porn-Dialer.GBDialer 77/10 May 13, 2009
SDBot 99/10 May 15, 2009
Taskmgr 77/10 90 May 15, 2009
Tibs 77/10 September 3, 2009
Troj/Dialer-HD May 13, 2010
Trojan.Dialer.qn 99/10 May 13, 2009
Trojan.Dialer.yz 99/10 10 May 13, 2009
Win32.Adialer May 2, 2012
XLoader 77/10 31 April 5, 2019

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