Category: DNS Disruptions

The Domain Name System has long served as one of the fundamental building blocks of the modern internet, providing a scalable and efficient mechanism for translating human-readable domain names into machine-usable IP addresses. What began as a simple protocol in the early 1980s has since undergone a profound transformation in response to increasing demands for…

Selecting the right DNS provider is a decision that can significantly impact the availability, performance, and security posture of an organization’s online services. While DNS is often thought of as a simple utility service that maps domain names to IP addresses, the reality is that DNS functions as the gateway to all internet-facing infrastructure. Whether…

DNS outages have the unique ability to paralyze digital operations completely, turning even minor configuration errors or service disruptions into incidents of massive visibility and customer impact. While application, network, or server-level issues might degrade performance or affect specific functions, a failure in DNS can cut off access entirely. Over the last decade, a series…

DNS gateway solutions have emerged as indispensable tools in the modern enterprise security stack, serving as the first line of defense against external threats and an invaluable source of visibility into user and device behavior. As the volume, variety, and velocity of cyber threats continue to grow, DNS-based filtering and logging mechanisms allow organizations to…

The Domain Name System is one of the most critical and widely used components of internet infrastructure, acting as the intermediary between human-readable domain names and machine-readable IP addresses. Despite its importance, DNS is often under-protected, leaving organizations vulnerable to a wide array of threats including cache poisoning, DNS spoofing, domain hijacking, and distributed denial-of-service…

DNS-based advertising blocking has become a popular and increasingly accessible method for individuals and organizations seeking to reduce exposure to online advertisements, trackers, and potentially malicious ad content. By intervening at the domain name resolution layer, this approach blocks requests to known ad-serving domains before a connection is ever established. Instead of resolving to the…

Certificate Authority Authorization (CAA) records in DNS represent a critical layer of defense in the domain security landscape, addressing a long-standing vulnerability in the public key infrastructure (PKI) that underpins HTTPS and secure web communications. By specifying which Certificate Authorities (CAs) are authorized to issue SSL/TLS certificates for a given domain, DNS CAA records help…

Every time a user accesses a website, streams content, or connects to an online service, a seemingly innocuous process takes place in the background: a DNS query is sent to resolve a human-readable domain name into a machine-readable IP address. This foundational mechanism enables all internet communication, but it also generates a continuous stream of…

The Domain Name System Security Extensions, or DNSSEC, represent one of the most important advancements in the evolution of DNS, addressing a fundamental vulnerability in the internet’s architecture. DNSSEC was designed to protect against forged DNS data by enabling cryptographic validation of DNS responses, ensuring that the information returned from a query originates from an…

In the summer of 2008, a critical vulnerability in the Domain Name System was revealed that would fundamentally change how DNS security was viewed and implemented. This flaw, discovered by security researcher Dan Kaminsky, exposed a systemic weakness in the way DNS resolvers handled responses from authoritative servers. The vulnerability allowed attackers to perform cache…