DNS Hijacking - Taking Over Top-Level Domains and Subdomains

TL;DR: On January 7, the Detectify security research team found that the .cd top-level domain (TLD) was about to be released for anyone to purchase and claimed it to keep it secure before any bad actors snatched it up. A technical report with full details is available on Detectify Labs. This blog post will discuss the basics of domain takeover.


It's Always DNS - But Not in the Way You May Think

A popular joke among technologists says that it’s always DNS, even when it initially didn’t seem that way. DNS issues come in many shapes and forms, including some often-overlooked security issues. DNS (short for the Domain Name System) continues to be described as “the phonebook of the Internet,” but many people, including most readers of this blog, will be more familiar with the basic workings of DNS than with the outdated phenomenon of paper phonebooks.


Monitor DNS with Datadog

DNS is a critical component of your infrastructure, enabling your services to reach the endpoints they rely on and connecting your users to your web applications from anywhere in the world. In order to keep your DNS healthy and performant, you need complete visibility into both internal and external DNS resolution. Datadog is excited to announce new DNS monitoring features that help you troubleshoot DNS end-to-end, so you can ensure your applications’ performance and availability.


How to monitor coreDNS

The most common problems and outages in a Kubernetes cluster come from coreDNS, so learning how to monitor coreDNS is crucial. Imagine that your frontend application suddenly goes down. After some time investigating, you discover it’s not resolving the backend endpoint because the DNS keeps returning 500 error codes. The sooner you can get to this conclusion, the faster you can recover your application.


Everything You Need to Know About DNS Monitoring

In order to communicate, web pages, devices and applications need a common naming system which allows them to identify each other and send information. This is particularly important when the communication takes place over the Internet because of the large number of services and websites that need to be identified. This is why the Domain Name System (DNS) is so important for businesses. It matches website pages and devices to an IP address that can be traced by other devices.


DNS Monitoring 101 - Troubleshoot Anycast DNS Issues

Today’s Tip of the Day is the final of three focused on Domain Name System (DNS) monitoring. In the rest of the series, we looked at how digital experience monitoring (DEM) can (i) help ensure users are served by the correct DNS server to reduce latency and (ii) help to guard against DNS-related attacks. In today’s post, we talk about Anycast DNS, the advantages it provides, the challenges it presents in relation to troubleshooting DNS issues, and how to overcome them with Catchpoint.