On Sunday, July 9, 2023, early morning UTC time, we observed a high number of DNS resolution failures — up to 7% of all DNS queries across the Asia Pacific region — caused by invalid DNSSEC signatures from Verisign .com and .net Top Level Domain (TLD) nameservers. This resulted in connection errors for visitors of […]
Tag Archives: dns
How we scaled and protected Eurovision 2023 voting with Pages and Turnstile
2023 was the first year that non-participating countries could vote for their favorites during the Eurovision Song Contest, adding millions of additional viewers and voters to an already impressive 162 million tuning in from the participating countries. It became a truly global event with a potential for disruption from multiple sources. To prepare for anything, […]
How Rust and Wasm power Cloudflare's 1.1.1.1
On April 1, 2018, Cloudflare announced the 1.1.1.1 public DNS resolver. Over the years, we added the debug page for troubleshooting, global cache purge, 0 TTL for zones on Cloudflare, Upstream TLS, and 1.1.1.1 for families to the platform. In this post, we would like to share some behind the scenes details and changes. When […]
It’s Hard To Change The Keys To The Internet And It Involves Destroying HSM’s
Photo by Niko Soikkeli / Unsplash The root of the DNS tree has been using DNSSEC to protect the zone content since 2010. DNSSEC is simply a mechanism to provide cryptographic signatures alongside DNS records that can be validated, i.e. prove the answer is correct and has not been tampered with. To learn more about […]
CAA of the Wild: Supporting a New Standard
One thing we take pride in at Cloudflare is embracing new protocols and standards that help make the Internet faster and safer. Sometimes this means that we’ll launch support for experimental features or standards still under active development, as we did with TLS 1.3. Due to the not-quite-final nature of some of these features, we […]
If I Knew Then What I Know Now: Tales from the Early Internet
Paul Mockapetris, Inventor, DNS, and David Conrad, CTO, ICANN Moderator: Matthew Prince, Co-Founder & CEO, Cloudflare Photo by Cloudflare Staff MP: You guys wrote all this stuff; why is the internet so broken? PM: People complain about security flaws, but there is no security in original design of dns. I think of it that we […]
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 […]
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… […]
Fake FreeDNS Used to Redirect Traffic to Malicious Sites
During the last couple of days we performed a few similar cleanup requests where sites occasionally redirected visitors to malicious sites that displayed ads, spam and malicious downloads. One of our security analysts, Andrey Kucherov, did some research in conjunction with our research team to find what was going on. In all cases the redirect… […]
200k+ Parked/Expired Domains Used to Distribute Malicious Ads
Recently we wrote about domain renewal scams that used real paper letters to tricks site owners into transferring their domains and renewing them for 3-4x the normal price. However, this is not the only way to make money on expiring domains. Today, we’ll show you another questionable million-dollar business on expired domain names that hurts… […]
