DNS, the Domain Name System, is one of the major pillars of the Internet. It’s a critical service, and without it we would all have to use IP addresses instead of handy domain names like “Pingdom.com” when we want to visit websites, send emails, and so on.
However, DNS has a huge flaw. Because DNS lacks security features it has been relatively easy for hackers to trick DNS servers with false information. By tricking DNS servers, hackers have been able to hijack entire websites. Needless to say, attacks such as these are a security nightmare and can be used for a large variety of malicious purposes such as site defacement, phishing, malware installations, and more.