Cybercriminals have developed a Web-based attack tool to hijack routers on a large scale when users visit compromised websites or view malicious advertisements in their browsers.

The goal of these attacks is to replace the DNS (Domain Name System) servers configured on routers with rogue ones controlled by attackers. This allows hackers to intercept traffic, spoof websites, hijack search queries, inject rogue ads on Web pages and more.

The DNS is like the Internet’s phonebook and plays a critical role. It translates domain names, which are easy for people to remember, into numerical IP (Internet Protocol) addresses that computers need to know to communicate with each other.

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