DNS Security

DNS Security / Most Commented

Defending Networks Against DNS Rebinding Attacks

DNS rebinding attacks are real and can be carried out in the real world. They can penetrate through browsers, Java, Flash, Adobe and can have serious implications for Web 2.0-type applications that pack more code and action onto the client. Such an attack can convert browsers into open network proxies and get around firewalls to access internal documents and services. It requires less than $100 to temporarily hijack 100,000 IP addresses for sending spam and defrauding pay-per-click advertisers. Everyone is at risk and relying on network firewalls is simply not enough. In a paper released by Stanford Security Lab, "Protecting Browsers from DNS Rebinding Attacks," authors Collin Jackson, Adam Barth, Andrew Bortz, Weidong Shao, and Dan Boneh provide ample detail about the nature of this attack as well as strong defenses that can be put in place in order to help protect modern browsers. more

The Evolution of DNS: Adapting to the Changing Internet Landscape

The DNS is a crucial part of today's Internet. With the fracturing of the network's address space as a byproduct of IPv4 address run down and the protracted IPv6 transition the Internet's name space is now the defining attribute of the Internet that makes it one network. However, the DNS is not a rigid and unchanging technology. It has changed considerably over the lifetime of the Internet and here I'd like to look at what's changed and what's remained the same. more

NIS 2.0 and Its Impact on the Domain Name Ecosystem

I recently appeared on the 419 Consulting podcast to discuss the European Union's NIS 2.0 Directive and its impact on the domain name ecosystem. I encourage all TLD registries, domain name registration service providers, and DNS operators to listen to the recording of that session which Andrew Campling has made available. more

13th Registration Operations Workshop: Join Us Online on June 4th, 2024

As a member of the ROW Planning Committee, I am writing this post on behalf of the Committee and welcome all community members to join us on June 4th. We are celebrating ROW's 10th anniversary! A decade of collaboration and inspiration! Thank you to the incredible community that has fueled this journey! more

GAC Communiqués and Community Activity on DNS Abuse

This blog post and the associated report aim to provide an overview of DNS Abuse 1related issues the Governmental Advisory Committee (GAC), part of the ICANN multi-stakeholder model, has identified. We also summarize the relevant community activity taking place to address these areas of interest and highlight remaining gaps. From 2016 to June 2023, the GAC referenced four primary categories of activity related to DNS Abuse. more

A Call to Help Disrupt the Spread of Child Sexual Abuse Materials

The Internet Watch Foundation (IWF) leads the charge to combat child sexual abuse material (CSAM) online, and we at Public Interest Registry (PIR) are dedicated to supporting their efforts. We are honored to work with them across two important programs: Domain Alerts and TLD Hopping List. IWF services have been extremely successful in addressing CSAM on .ORG over the past five years more

DNSSEC Failure Causes Massive Website Outages on Russian Internet

A DNSSEC failure plunged hundreds of Russian-language websites into darkness on Tuesday evening, rendering .ru and .рф domains inaccessible. The outage affected users both within and outside Russia, with major platforms such as Tinkoff Bank, Avito, Wildberries, Yandex, and MTS experiencing disruptions. more

A Layered Approach to IG: Cooperation or Crisis!

In an Internet governance agenda that treats diversity of addressing issues as the ultimate end at any cost, technology and its end-users are mere means, and much of the work that sustains the Internet is ignored entirely. As a nation, you are free to initiate different regulations, but when you start getting into the world of infrastructure, you are legislating far beyond the nation-state borders. more

Verisign Provides Open Source Implementation of Merkle Tree Ladder Mode

The quantum computing era is coming, and it will change everything about how the world connects online. While quantum computing will yield tremendous benefits, it will also create new risks, so it's essential that we prepare our critical internet infrastructure for what's to come. That's why we're so pleased to share our latest efforts in this area, including technology that we're making available as an open source implementation to help internet operators worldwide prepare. more

Challenges in Measuring DNS Abuse

From the creation of DNSAI Compass ("Compass"), we knew that measuring DNS Abuse1 would be difficult and that it would be beneficial to anticipate the challenges we would encounter. With more than a year of published reports, we are sharing insights into one of the obstacles we have faced. One of our core principles is transparency and we've worked hard to provide this with our methodology. more

Mitigating DNS Abuse and Safeguarding the Internet

The internet is a beacon of global connectivity and information, but it has also become a battleground where malicious actors exploit vulnerabilities for various immoral purposes. Domain Name System (DNS) abuse stands has proven a constant in the internet threat landscape, posing risk to the overall digital trust. more

Measuring the Use of DNSSEC

The canonical specification of the DNS that is normally cited are the pair of quite venerable RFCs, RFC 1034, "Domain names - concepts and facilities", and RFC 1035, "Domain names - implementation and specification", both published in November 1987. However, these two specification documents are just the tip of a rather large iceberg. One compendium of all the RFCs that touch upon the DNS lists some 292 RFCs. more

Verisign Will Help Strengthen Security With DNSSEC Algorithm Update

As part of Verisign's ongoing effort to make global internet infrastructure more secure, stable, and resilient, we will soon make an important technology update to how we protect the top-level domains (TLDs) we operate. The vast majority of internet users won't notice any difference, but the update will support enhanced security for several Verisign-operated TLDs and pave the way for broader adoption and the next era of Domain Name System (DNS) security measures. more

Call for Participation - ICANN DNSSEC and Security Workshop for ICANN78 Annual General Meeting

In cooperation with the ICANN Security and Stability Advisory Committee (SSAC), we are planning a DNSSEC and Security Workshop for the ICANN78 Annual General Meeting being held as a hybrid meeting from 21-26 October 2023 in Hamburg, Germany in the Central European Summer Time Zone (UTC +2). This workshop date will be determined once ICANN creates a block schedule for us to follow; then we will be able to request a day and time. more

Next Steps in Preparing for Post-Quantum DNSSEC

In 2021, we discussed a potential future shift from established public-key algorithms to so-called "post-quantum" algorithms, which may help protect sensitive information after the advent of quantum computers. We also shared some of our initial research on how to apply these algorithms to the Domain Name System Security Extensions, or DNSSEC. In the time since that blog post, we've continued to explore ways to address the potential operational impact of post-quantum algorithms on DNSSEC, while also closely tracking industry research and advances in this area. more