DNSChanger is a class of malicious software (malware) that changes a user's Domain Name System (5)

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According to the FBI, the number of computers that probably are infected is more than 277,000 worldwide, down from about 360,000 in April. About 6000 still-infected computers are probably in Australia, according to Australian communications regulator

Check your computer on Australian Government site: -

Your system does not appear to be affected by the DNSChanger malware.
What is DNSChanger?

DNSChanger is a class of malicious software (malware) that changes a user's Domain Name System (DNS) settings, enabling criminals to direct unsuspecting internet users to fraudulent websites and otherwise interfere with access to internet services. It has been associated with 'click fraud', the installation of additional malware and other malicious activities.

In November 2011, the FBI closed down a ring of cyber-criminals believed to be responsible for the worldwide spread of DNSChanger.

An estimated four million users were affected worldwide. To avoid these victims losing access to internet services, the FBI worked with the Internet Systems Consortium (ISC) to set up and operate a temporary but correct DNS solution, while giving ISPs the opportunity to assist their customers to remove their potential infection.

This temporary solution will be switched off on 9 July 2012. Users infected by DNSChanger will be unable to access internet services when the temporary DNS solution is switched off.

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