How can you detect if your computer has been violated and infected with DNS Changer?

How can you detect if your computer has been violated and infected with DNS Changer?

An industry wide team has developed easy “are you infected” web sites.  They are a quick way to determine if you are infected with DNS Changer. Each site is designed for any normal computer user to browse to a link, follow the instructions, and see if they might be infected. Each site has instructions in their local languages on the next steps to clean up possible infections.


For example, the http://www.dns-ok.us/ will state if you are or are not infected (see below).

• No Software is Downloaded! The tools do not need to to load any software on your computer to perform the check.
• No changes are performed on your computer! Nothing is changed on your computer when you use sites like http://www.dns-ok.us/.
• No scanning!  The “are you infected with DNS Changer” tool does not need to scan your computer.

If you think your computer is infected with DNS Changer or any other malware, please refer to the security guides from your operating system or the self -help references from our fix page (http://www.dcwg.org/fix).
The following table is a list of all easy “are you infected”  sites. It includes the links to the security organizations who are maintaining the sites. Each site has instructions in their local languages on the next steps to clean up possible infections.

URL	Language	Maintainer
www.dns-ok.us	English	DNS Changer Working Group (DCWG)
www.dns-ok.de	German	Bundeskriminalamt (BKA) & Bundesamt für Sicherheit in der Informationstechnik (BSI)
www.dns-ok.fi	Finnish, Swedish, English	CERT-FI is the Finnish national reporting point for computer security incidents and information security threats. CERT-FI is also responsible of maintaining the national information security situation awareness system.
www.dns-ok.ax	Swedish, Finnish, English	CERT-FI is the Finnish national reporting point for computer security incidents and information security threats. CERT-FI is also responsible of maintaining the national information security situation awareness system.
www.dns-ok.be	Dutch/French	CERT-BE is the primary Belgian contact point for dealing with Internet security threats and vulnerabilities affecting Belgian interests.
www.dns-ok.fr	French	Le CERT-LEXSI est la division de veille et d'enquête sur Internet, dédiée à la protection du patrimoine en ligne des organisations.
www.dns-ok.ca	English/French	Canadian Internet Registration Authority (CIRA) and Canadian Cyber Incident Response Centre (CCIRC)
www.dns-ok.lu	English	CIRCL (Computer Incident Response Center Luxembourg) is the national Computer Security Incident Response Team (CSIRT - CERT) coordination center for the Grand-Duchy of Luxembourg
www.dns-ok.nl	Dutch	SIDN (the Foundation for Internet Domain Registration in the Netherlands)
dns-ok.gov.au	English	CERT Australia, Stay Smart Online, and Australian Communications and Media Authority joint page on DNSChanger Information
dns-changer.eu	German, Spanish, English	ECO (Association of the German Internet Industry)
dnschanger.detect.my	Malaysian, English	Hosted by CyberSecurity Malaysia and MYCERT
dns-ok.jpcert.or.jp	Japanese	JPCERT/CC - Japan Computer Emergency Response Team Coordination Center
www.dns-ok.it	Italiano	Telecom Italia Security Operation Center - IT.TS.SOC

If you are not affected by DNS Changer then do nothing.
If the Check-Up Site indicates that you are affected then either follow the instructions on that site or go to the “FIX” page.

Manually Checking if your DNS server have been Changed

The following pages would help check to manually see if you have DNS Changer DNS servers configured on your computer. Use of the “check up” pages are more effective, but some would want to check manually.

• Checking for DNS Changer on Windows XP
• Checking for DNS Changer on Windows Vista (pending)
• Checking Windows 7 for Infections
• Checking OSX for Infections 

 *THE ABOVE MENTIONED INFORMATION SOURCE http://www.dcwg.org/

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