Tag Archives: dns

The Story of an Expired WHOIS Server

We write quite often about SEO spam injections on compromised websites, but this is the first time we have seen this blackhat tactic spreading into the WHOIS results for a domain name. If you are not familiar with “WHOIS“, it is a protocol used to check who owns a specific domain name. These simple text More Info »

A Plugin’s Expired Domain Poses a Security Threat to Websites

Do you keep all your website software (including all third-party themes, plugins and components) up-to-date? You should! We always recommend this to our clients and our readers. Applying updates quickly will make sure that you replace any vulnerable code as soon as the security patch is released. However, this isn’t the only reason to keep… More Info »

Domain Renewal Phishing Scams

When I received a letter in the mail asking me to renew my domain name, I immediately recognized it as a scam. The letter was designed to look like a bill, even including a return envelope for me to send payment to a company called iDNS Canada. I’d never heard of them before. The letter… More Info »

A tale of a DNS exploit: CVE-2015-7547

This post was written by Marek Vavruša and Jaime Cochran, who found out they were both independently working on the same glibc vulnerability attack vectors at 3am last Tuesday. A buffer overflow error in GNU libc DNS stub resolver code was announced last week as CVE-2015-7547. While it doesn’t have any nickname yet (last year’s More Info »

Introducing CloudFlare Registrar: Designed for Security, Not the Masses

At CloudFlare, we’ve constructed one of the world’s largest networks purpose-built to protect our customers from a wide range of attacks. We’re so good at it that attackers increasingly look for ways to go around us, rather than go through us. One of the biggest risks for high-profile customers has been having their domain stolen More Info »

DNS parser, meet Go fuzzer

Here at CloudFlare we are heavy users of the github.com/miekgs/dns Go DNS library and we make sure to contribute to its development as much as possible. Therefore when Dmitry Vyukov published go-fuzz and started to uncover tens of bugs in the Go standard library, our task was clear. Hot Fuzz Fuzzing is the technique of More Info »