Cybersecurity

Minimized DNS Resolution: Into the Penumbra

Over the past several years, domain name queries - a critical element of internet communication - have quietly become more secure, thanks, in large part, to a little-known set of technologies that are having a global impact. Verisign CTO Dr. Burt Kaliski covered these in a recent Internet Protocol Journal article, and I'm excited to share more about the role Verisign has performed in advancing this work and making one particular technology freely available worldwide. more

Processing Domain Data to Improve Business Continuity as a Domain Name Registry

In the fall of 2022, around 9,000 numeric domain names such as 0146.se, 0148.se, 0149.se, and so on were registered in the .SE zone. These domains were registered with two registrars, Register.eu and 1API. They had the same kind of SSL certificate, and there were other similarities among them that strongly suggested they were connected. All these domains were registered after September 1, 2022, but not on the same date... more

An Extortionists Fire Sale of TikTok to a US Company Would Be Un-American and Futile

In the latest twist of the US-China spat, President Trump has his sights on TikTok, the short-form video-sharing platform and ByteDance subsidiary. On July 31, President Trump threatened to ban TikTok because it was a threat to US national security. On August 6, he made good on his threat when he signed an Executive Order to that effect. President Trump tightened the screws with an August 14 Executive Order requiring ByteDance to divest its assets in the US and destroy any TikTok data on its US users within 90 days. more

OARC-40: Notes on the Recent DNS Operations, Analysis, and Research Centre Workshop

OARC held a 2-day meeting in February, with presentations on various DNS topics. Here are some observations I picked up from the presentations in that meeting... In a world where every DNS name is DNSSEC-signed, and every DNS client validates all received DNS responses, we wouldn't necessarily have the problem of DNS spoofing. Even if we concede that universal use of DNSSEC is a long time off ... more

Trust and Insecurity

When I was first advocating home networking at Microsoft, we encountered a problem. The existing systems and applications had implicitly assumed they were inside a safe environment and didn't consider threats from bad actors. Early Windows systems hadn't yet provided file system with access control and other protections though there were some attempts to have separate logins to keep some settings separate. more

Domains Under the Most-Abused TLDs: Same Old DNS Abuse Trends?

While threat actors can use any domain across thousands of top-level domains (TLDs), they often have favorites. For instance, you may be familiar with Spamhaus's 10 most-abused TLDs for spamming. WhoisXML API researchers recently built on this list by analyzing 40,000 newly registered domains (NRDs) that sported some of the listed unreputable TLDs. We called this study "DNS Abuse Trends: Dissecting the Domains Under the Most-Abused TLDs." more

Brand Impersonation Online is a Multidimensional Cybersecurity Threat

Brand impersonation happens much more often than people realize. In CSC's latest Domain Security Report, we found that 75% of domains for the Global 2000 that contained more than six characters from the brand names were not actually owned by the brands themselves. The intent of these fake domain registrations is to leverage the trust placed on the targeted brands to launch phishing attacks, other forms of digital brand abuse, or IP infringement... more

DNSAI Compass: Six Months of Measuring Phishing and Malware

The DNS Abuse Institute recently published our sixth monthly report for our project to measure DNS Abuse: DNSAI Compass ('Compass'). Compass is an initiative of the DNS Abuse Institute to measure the use of the DNS for phishing and malware. The intention is to establish a credible source of metrics for addressing DNS Abuse. We hope this will enable focused conversations, and identify opportunities for improvement. more

Patterns and Trends in Domain Tasting of the Top 10 Global Brands

Domain tasting is a long-established practice involving the short-lived existence of a domain, which is allowed to lapse a few days after its initial registration. The practice arose in response to an Internet Corporation for Assigned Names and Numbers (ICANN) policy allowing a domain to be cancelled -- with all fees refunded -- within a five-day grace period, intended to address the issue of accidental registrations1. However, the practice is open to abuse by infringers. more

The Highest Threat TLDs - Part 2

In the first article of this two-part blog series, we looked at how frequently domains were used by bad actors for phishing activity across individual top-level domains (TLDs) or domain extensions, using data from CSC's Fraud Protection services, powered by our DomainSecSM platform. In this second article, we analyze multiple datasets to determine the highest-threat TLDs, based on the frequency with which the domains are used egregiously for a range of cybercrimes. more