What is DNS Poisoning?

March 3, 2025

Preface #

In the modern internet ecosystem, the Domain Name System (DNS) is a critical infrastructure that connects users to websites, playing an indispensable role. Simply put, DNS acts like an address book on the internet, converting human-friendly domain names (such as www.example.com) into IP addresses that computers can understand (like 192.168.1.1). However, this seemingly basic function hides a severe security risk. In certain circumstances, DNS servers can be maliciously manipulated or tampered with, leading to interference in user query results—a phenomenon known as DNS poisoning.