DNS Hijacking Fix 101

In October 2016, many popular websites such as Amazon, Twitter, Netflix and Spotify became inaccessible to millions of internet users in the US for nearly 10 hours. DDOS attacks on several DNS hosts was attributed to be the reason behind this incident.
Although DNS simplifies our life by helping us directly resolve connection requests between websites and web-connected devices, it is not without faults. In fact, cybercriminals can exploit DNS servers and addresses in many ways to capture your valuable data.
Keep reading to know about DNS hijacking fix but, it is important first to know what DNS hijacking is and how it works.

What exactly is DNS Hijacking?

DNS hijacking attacks, also known as DNS redirects, are network attacks in which a hacker hijacks a user’s DNS request, inappropriately resolves the IP address of the website, and when the user attempts to load it, he/she gets redirected to the phishing site.
The hijack involves breaking DNS settings of a user’s system to redirect them to the rogue DNS server, as a result incapacitating the default DNS settings. To perform an attack, the hacker either installs malware on the user’s system or takes over the router by exploiting known vulnerabilities or cracking DNS traffic. Thus, users will become victims of phishing or domain spoofing.

Types of DNS hijacking attack

Local DNS hijacking attack

In this type of attack, a hacker embeds malicious software on the user’s system and modifies local DNS settings, making the user system now use a DNS server which is controlled by the hacker.

Router DNS hijacking attack

In Router DNS hijacking, a hacker takes over the router by using the router’s default password and exploits firmware vulnerability in the router to override the DNS settings, affecting all the users connected to the router.

Man-in-the-middle (MITM) DNS attack

In this DNS hijacking attack, a hacker performs a MITM attack to intercept communication between the user and the DNS server, giving a different destination IP address which is further used to point the user to a malicious site.

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