What is dns changer virus

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This virus changes the DNS setting that your operating system uses to do name lookups like www.tomshardware.com. If your DNS is set to point at a rogue DNS server, it will lie in effect. When you type in www.tomshardware.com, the rogue DNS server may send you to a site that looks like Tom's, but has malware embedded in the web page/site.

If typing in a web address constantly takes you to the wrong site, the first thing to check is if your DNS settings have been altered.
 
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