What Causes Domain Name Pollution?

July 3, 2025

Introduction #

Domain name pollution, also known as DNS pollution or DNS cache poisoning, is a cyberattack technique that tampers with Domain Name System (DNS) resolution results. It causes users to be redirected to incorrect IP addresses when accessing a domain, preventing access to the intended website or leading to malicious sites. This attack not only disrupts users’ normal internet experience but also poses significant security risks, such as data breaches or malware infections. This article explores the causes, mechanisms, impacts, and detection and prevention methods of domain name pollution to help users better understand and address this cybersecurity threat.