Unauthorized modification of a DNS server or change of DNS address that directs users attempting to access a web page to a different web page that looks the same but contains extra content such as advertisements, is a competitor page, a malware page, or third-party search page. DNS hijacking is also now being done by some of the large ISPs such as Comcast as a method to linking users to their own search pages when they visit a webpage that no longer exists. This is done because many claim it increases users experience, however, this can also be another great source of extra revenue since they control the site and get paid off any advertisements. Currently all countries in the world have no laws
against an ISP doing this to its users. How do I know if my ISP is hijacking me? If you visit any fake or non-existent site, e.g. something like http://www.jasdf2dfde3.com
and it pulls up a search engine or a collection of links your DNS is redirecting you. How do I know if a page is non-existent? Enter the same URL you're entering into your browser into our free isitup utility. If it displays an error the site does not exist.
How can I opt out of my ISP DNS hijack? Although all of the ISPs will allow you to opt out of their DNS redirection many use cookies to perform this function. What this means is that you'll still be redirected but the cookie will let the website know you do not want to view the search results.
Alternative DNS addresses OpenDNS DNS1: 208.67.222.222
DNS2: 208.67.220.220
Also see: DNS, Network definitions, Pharming, Security definitions | 
