DNS hijacking redirects web traffic from the intended destination to a new, malicious source. Often, the victim will not even be aware they were redirected since their URL will appear the same in their browser.
While DNS hijacking continues to be a threat, there are many ways and services to mitigate and protect a DNS for your employees and users. This article will explore what is DNS hijacking in more detail, explain how it works, and demonstrate how to prevent DNS hijacking so businesses can avoid falling victim to the attack.
What is it?
What is DNS Hijacking?
How it works
How DNS hijacking works
There are several different ways DNS hijacking can work. Some of the most common methods include:
How to prevent
DNS Hijacking Explained: How to prevent DNS hijacking
The DNS resolver sends queries to and from the DNS. A fake resolver can be used in DNS hijacking, redirecting traffic to a phony website. For this reason, it’s crucial to ensure your legitimate resolvers are always safely behind a firewall — blocking access to anyone outside the organization.
Resolvers should always be carefully monitored, and you should shut down any unneeded ones quickly.
Educate staff on security best practices
Everyone working in your organization should be aware of what to do (and what not to do) to know how to prevent DNS hijacking. Thankfully, most of these best practices are in line with standard cybersecurity measures for good hygiene.
Restrict access to name servers
A name server is a server where your DNS information is stored, and it’s essential to keep these servers as protected as possible. Use physical security, multi-factor authentication, and a strong firewall to prevent malicious actors from gaining access.
In addition, separating the authoritative name server from the resolver ensures that an attack on one server won’t impact the other.
Immediately patch known vulnerabilities
Hackers are always on the lookout for the low-hanging fruit of vulnerable DNS servers. By taking simple steps, you’ll deter and defend against these attacks.
A good patch management program within your organization is strongly recommended.
How AT&T Cybersecurity Solutions and Services can help
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