Author: Staff

DNS tunneling is a sophisticated method of exploiting the Domain Name System to bypass security controls, exfiltrate data, or establish covert communication channels. While DNS is designed for resolving domain names to IP addresses, its flexibility allows attackers to encode arbitrary data within DNS queries and responses, transforming it into an unorthodox but highly effective…

DNS cache poisoning is one of the most dangerous and deceptive attacks targeting the Domain Name System, allowing attackers to manipulate cached DNS responses and redirect users to malicious websites without their knowledge. This type of attack exploits the fundamental caching mechanism of DNS resolvers, injecting fraudulent data that is then stored and served to…

The Domain Name System plays a fundamental role in the functioning of the internet, translating human-readable domain names into numerical IP addresses that allow devices to communicate. However, in its original design, DNS was not built with security in mind, making it vulnerable to various attacks, including cache poisoning, man-in-the-middle attacks, and data spoofing. To…

When changes are made to DNS records, they do not take effect immediately across the entire internet. Instead, they must propagate, a process in which updated information gradually spreads from authoritative name servers to recursive resolvers worldwide. DNS propagation is an inherent characteristic of the distributed nature of the Domain Name System, designed to balance…

The Domain Name System is one of the most critical components of the internet, responsible for translating human-readable domain names into numerical IP addresses that allow computers to communicate. Due to its fundamental role in enabling web access, DNS infrastructure is a frequent target of Distributed Denial-of-Service attacks. These attacks aim to overwhelm DNS servers…

The Domain Name System is a foundational component of the internet, responsible for translating human-readable domain names into numerical IP addresses that computers use to communicate. Given its critical role in enabling global connectivity, ensuring the resilience of DNS infrastructure is paramount to maintaining uninterrupted access to online services. DNS resilience refers to the ability…

The Domain Name System relies on a variety of record types to direct internet traffic efficiently and accurately. These records serve as instructions that tell DNS resolvers how to handle queries for a domain, enabling web browsing, email delivery, security policies, and load balancing across distributed networks. Each record type has a specific function, and…

The Domain Name System is structured as a hierarchical and distributed database that enables the efficient resolution of human-readable domain names into numerical IP addresses. This hierarchy is essential for maintaining the scalability, reliability, and resilience of the internet, ensuring that billions of users can access websites and services without disruption. At its core, DNS…

Recursive resolvers are an essential yet often overlooked component of the Domain Name System, acting as the intermediaries that process and fulfill user queries whenever a domain name needs to be resolved into an IP address. Their role is crucial in ensuring the speed, reliability, and security of internet navigation, as they handle the complex…

The Domain Name System (DNS) is one of the fundamental pillars of the modern internet, enabling users to access websites, send emails, and connect to online services with ease. However, DNS was not always the sophisticated and resilient system it is today. Its origins trace back to the early days of computer networking, when the…