DNS Security

CircleID’s Top 10 Posts for 2010

Looking back at 2010, here is the list of top ten most popular news, blogs, and industry news on CircleID in 2010 based on the overall readership of the posts (total views as of Jan 1, 2011). Congratulations to all the participants whose posts reached top readership and best wishes to the entire community for 2011. Happy New Year! more

New CSC Research Finds Significant Lack of Redundancy for Enterprise DNS

As outlined in CSC's recent 2020 Domain Security Report: Forbes Global 2000 Companies, cybercriminals are disrupting organizations by attacking the protocol responsible for their online presence -- their domain name system (DNS). When a DNS is overwhelmed with traffic due to a distributed denial of service (DDoS) attack or configuration error, content and applications become inaccessible to users, affecting both revenue and reputation. more

An Authenticated Internet

Discussions around DNSSEC are so often focused on the root, the attacks, what DNSSEC does and doesn't do and so on -- and these are all valid and important points. But there is far less attention focused on the opportunities that will surface from an authenticated internet. ...DNSSEC is becoming more of a reality now -- rather than a technical discussion which has been stuck in the mud for 15 years. We can now begin to think about new opportunities to build from a secure DNS, opportunities that build on the certainty that you have arrived at the correct website. Today, you can't be sure. more

ICANN Complaint System Easily Gamed

ICANN's WDPRS system has been defeated. The system is intended to remove or correct fraudulently registered domains, but it does not work anymore. Yesterday I submitted a memo to the leadership of the ICANN At-Large Advisory Committee (ALAC) and the greater At-Large community. The memo concerns the details of a 214-day saga of complaints about a single domain used for trafficking opioids. more

DNSSEC Deployment Reaching Critical Mass

Less than nine months after the DNS root was signed, the rollout of DNSSEC across the Internet's top-level domains is approaching the tipping point. Thanks to the combined efforts of registries around the world, the new security protocol will soon be available to the majority of domain name registrants in almost a quarter of all TLDs. more

Measuring Abuse: How Much COVID-Related Abuse Is There, Really?

Like measuring COVID's impact, so too measuring the impact of COVID-related abuse on the Internet is difficult, there are those that would foolishly dismiss the danger entirely, others over-state the problem, perhaps to prompt sales of tools and services. The amount and type of abuse varies from network to network, and to declare everything is fine based on one world-view you believe to be ubiquitous, or that the sky is falling based upon another, extrapolated to 'everybody else' is simply poor analysis. more

You Don’t Need to Hack Twitter.com to Control All Its Traffic and Email

A big security news event last night and today is that the Twitter.com Web site was hacked and content on the site replaced. TechCrunch reported it and it has been picked up globally. But - was the Twitter.com website really hacked? We now know it was not so. There are four ways that users typing in Twitter.com would have seen the Iranian Cyber Army page. more

Securing a Domain: SSL vs. DNSSEC

There has been quite a bit of talk lately about the best way to secure a domain, mainly centered in two camps: using Secure Socket Layer (SSL), or using DNS Security Extensions (DNSSEC). The answer is quite simple -- you should use both. The reason for this is that they solve different problems, using different methods, and operate over different data. more

ICANN Fails Consumers (Again)

In its bid to be free of U.S. government oversight ICANN is leaning on the global multistakeholder community as proof positive that its policy-making comes from the ground up. ICANN's recent response to three U.S. senators invokes the input of "end users from all over the world" as a way of explaining how the organization is driven. Regardless of the invocation of the end user (and it must be instinct) ICANN cannot seem to help reaching back and slapping that end user across the face. more

How New Domains are Driving DNS-based Attacks

Cyber criminals are the kings of recycling. Once they've found a tactic that works well, they'll keep doing it as long as they can get away with it. That's why it's so important for research teams to keep a close eye on what's happening behind the scenes with web traffic. Case in point? Our team at DNSFilter recently analyzed global DNS activity from the first quarter of 2025 and identified several notable trends. more

The Cybersecurity Act of 2009

Four senators (Rockefeller, Bayh, Nelson, and Snowe) have recently introduced S.773, the Cybersecurity Act of 2009. While there are some good parts to the bill, many of the substantive provisions are poorly thought out at best. The bill attempts to solve non-problems, and to assume that research results can be commanded into being by virtue of an act of Congress. Beyond that, there are parts of the bill whose purpose is mysterious, or whose content bears no relation to its title. more

The Case Against DNSSEC

I was talking to my good friend Verner Entwhistle the other day when he suddenly turned to me and said "I don't think we need DNSSEC". Sharp intake of breath. Transpired after a long and involved discussion his case boiled down to four points: 1. SSL provides known and trusted security, DNSSEC is superfluous, 2. DNSSEC is complex and potentially prone to errors, 3. DNSSEC makes DoS attacks worse, 4. DNSSEC does not solve the last mile problem. Let's take them one at a time... more

On the Time Value of Security Features in DNS

There are some real problems in DNS, related to the general absence of Source Address Validation (SAV) on many networks connected to the Internet. The core of the Internet is aware of destinations but blind to sources. If an attacker on ISP A wants to forge the source IP address of someone at University B when transmitting a packet toward Company C, that packet is likely be delivered complete and intact, including its forged IP source address. Many otherwise sensible people spend a lot of time and airline miles trying to improve this situation... The problems created for the Domain Name System (DNS) by the general lack of SAV are simply hellish. more

Social Networking and Web 2.0 Creating DNS Performance Issues for Carriers

A revolution is taking place on the Internet, with new sites redefining how we interact online. The next-generation Internet is emerging in collaborative and interactive applications and sites with rich, varied media (images, video, music). As with many revolutions, this one is driven by the younger generation, which is adopting social networking sites like MySpace and video sharing sites like Google's YouTube. But the general shift is not restricted to the young, as more mature consumers and businesses alike are exploring the possibilities of collaborative, media-rich applications. This major shift in Internet applications has its unintended victims. One of them turns out to be the Domain Name System (DNS). more

CENTR Publishes Comment on the European Commission’s DNS Abuse Study

CENTR, which represents European national top-level domain name registries (ccTLDs) such as .si or .eu, has published its comments on the European Commission's DNS abuse study, calling out some of the "misleading analysis and unfortunate conclusions in the study." more