Threats That Require DNS Security

Threats That Require DNS Security
The Domain Name System, also known as DNS, is used billions of times every single day. In the business world, it is a huge and important part of a company’s digital identity. Just like any technology, there is always a risk to DNS, especially because it is always on. As a result, it often goes overlooked. However, it is important to use DNS security against a few common threats that can compromise it.


DDoS, also referred to as distributed denial of service, is one of the most common threats to DNS security, but it is not specific only to DNS. At the same time, the DNS is especially vulnerable to this type of threat because it attacks the entire network. Even when a website is well monitored, when a DDoS attack occurs, the DNS is unable to handle the number of requests to access it and then, as a result, the website’s performance is either incomplete or completely disabled. To protect against this kind of threat, it is important to using a DNS provider that includes a network of Anycast servers to handle the traffic. This can serve a twofold effect by protecting against such an attack and improve performance.

Cache Poisoning

Your computer uses DNS data that is cached from areas of the network when you visit a website or send an email. It improves web performance and lessens the load on registries that deliver DNS responses. In spite of this, the cache can still suffer from what is known as cache poisoning, which occurs when a hacker exploits vulnerabilities in DNS servers. When there is such an exploit, fraudulent information is present in the cache and a user accessing the cache would be on a server controlled by the hacker. It is virtually impossible for the user to realize they are being phished if the hacker’s site is close enough of a replica of the official site. A DNSSEC digital signature added to a domain name protects against this type of attack.

Registrar Hacking

Most domain names are registered through registrar companies. Problems can arise as a result, including an attacker gaining control over your domain name and compromising your account through your registrar. In turn, the attacker can do as they wish, including directing the domain name to the server of their choice. Even worse, a domain name can be transferred to a different registrar, which can make recovering it by the owner a difficult situation. To protect against this type of attack, you should opt for a registrar company that provides extra security, such as multi-factor authentication.

There are always solutions for DNS attacks. DNS security ensures there is extra protection, with some being simpler than others.