Attacks on a service – domain spoofing and hijacking, or cache poisoning

Domain spoofing, generally known as DNS spoofing and also called DNS cache poisoning, is a technique in which attackers alter DNS records to redirect network traffic to a malicious phishing website that looks like an original website, to grab credentials, confidential data, and so on.

So, how does a DNS spoofing attack work in a real-world environment? Let’s understand the basics of this attack with a simple diagram, as shown in the following figure:

Figure 13.18 – DNS spoofing

Let’s elaborate on the preceding figure, as follows:

1. An attacker injects a fake or malicious website DNS entry into the DNS server.
2. The victim opens the original website (domain).
3. The DNS resolver checks the domain name in its cache and resolves it in the fake DNS entry.
4. Once the domain is resolved, the victim will be redirected to the fake malicious domain.
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