DNS hijacking or DNS redirection is the practice of redirecting the resolution of Domain Name System (DNS) names to other DNS servers. This is done for malicious purposes such as phishing; for self-serving purposes by Internet service providers (ISPs) to direct users' HTTP traffic via the ISP's own webservers where advertisements are served, statistics can be collected, or other purposes of the ISP; and by DNS service providers to block access to sites which the user wishes to block because they are malicious or of an unwanted.
DNS hijacking is used by hackers with malicious intent who redirect or "hijack" the DNS addresses to bogus DNS servers for the purpose of injecting malware into your PC, promoting phishing scams, advertising on high traffic websites, and any other related form of criminal activity.
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