DNSChanger is also known as TDSS, Alureon, TidServ or TDL4.
What does DNSChanger malware do?
DNS Changer malware causes a computer to use rogue DNS servers, controlled by cyber criminals, instead of a legitimate one that is provided by your Internet service provider.
This malware resides in your computer which may leave you vulnerable to criminal organizations that could misuse and redirect your Internet traffic.
How to detect the DNSChanger malware
Visit www.dns-ok.ca.
This website checks your computer settings to see if it’s infected with DNSChanger.
This website is hosted by the Canadian Internet Registration Authority (CIRA)
If the screen is green, you’re not affected.
If the screen is red, your computer is infected with the DNS Changer malware.
Perform this check on all the computers/laptops within your household to ensure your home network is not infected.
How can I fix/resolve this issue?
You have two options.
1. Seek help from a computer professional.
Contact a computer professional to have the malware removed.
The Government of Canada has provided detailed information about DNS Changer that may be useful for your computer professional.
2. Try to remove the malware yourself (for advanced users).
Using a non-infected computer, consult the malware removal guidelines provided by the Government of Canada.