In the world of the internet, the Domain Name System (DNS) plays a critical role by converting human-readable domain names into IP addresses that computers can understand. However, this system can sometimes be disrupted, preventing users from accessing the websites they intend to visit. This disruption is known as “domain pollution” or “DNS pollution.” Domain pollution occurs when DNS resolution is tampered with, causing users to be redirected to incorrect IP addresses when attempting to access a domain, thus failing to reach the intended website content.

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.

Domain name pollution (DNS Pollution) occurs when the Domain Name System (DNS) resolution process returns incorrect or malicious IP addresses, causing users to fail to access the target website or be redirected to malicious sites. This issue is more common in certain regions and may result from network censorship, malicious attacks, or configuration errors. Domain name pollution not only affects user experience but also poses risks like data leaks or security threats. This article explores the causes, symptoms, and solutions for domain name pollution, providing users with professional and practical approaches.