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WHOIS History API: Powering Domain Investigations

Domain Research and Monitoring: Keeping an Eye on the Web for You

Reverse WHOIS: A Powerful Process in Cybersecurity

Threat Intelligence / Most Commented

Routing Redundancy: How Much Is Enough?

Internet connectivity is a good thing. Many of us depend on it for everything from our livelihoods to our entertainment. However, the Internet is very fragile and even the The New York Times is worried about it. But they're primarily concerned with overloads that can occur when everyone on the planet does the same thing at roughly the same time, such as surfing for news about Michael Jackson. Unfortunately, we will never avoid all such scenarios. Physical systems are designed around average and typical peak loads, not around extremely high loads associated with very unlikely events. Who would pay for that? more

Innovation and Cybersecurity Regulation

The market has failed to secure cyberspace. A ten-year experiment in faith-based cybersecurity has proven this beyond question. The market has failed and the failure of U.S. policies to recognize this explains why we are in crisis. The former chairman of the Security and Exchange Commission, Christopher Cox, a longtime proponent of deregulation, provided a useful summary of the issue when he said, "The last six months have made it abundantly clear that voluntary regulation does not work."... more

Top 10 Spam Stories of 2008

Well, it's a yearly tradition in the western hemisphere that at the end of the year, we compose a top 10 list of the 10 most . Since it is now 2009, I thought that I would create my own list of the top 10 spam stories of 2008. Now, not all of these will be universally applicable to everyone, they are the top 10 stories as seen by me. more

Day 30: Kaminsky DNS Bug Disclosure

In a highly anticipated presentation, Internet security researcher Dan Kaminsky today gave details of the much talked about Domain Name System (DNS) vulnerability issue which has been intensely covered since it was publicly announced a month ago on Jul 8th. Although original plans entailed keeping the bug details undisclosed for 30 days in order to allow for necessary security patches to be implemented around the world, details of the bug were eventually leaked-and-confirmed 13 days after its public announcement. Even so, just hours ago in jam-packed ballroom during the Black Hat conference, Kaminsky delivered his 100-plus-slide presentation detailing the DNS flaw that, if exploited, could potentially "destroy the Web". more

Uprooting of the DNS Root

The folks at Renesys pointed out earlier this week some interesting activity surrounding the L-root name server, highlighting some activity that should give us all yet another reason to be concerned about the security and integrity of the Internet DNS... considering that a great deal of malware today tends to corrupt the DNS resolution path in order to further exploit compromised end-systems, and that corruption, or any other actual end-system compromise, might well be unnecessary if the root were compromised -- well, think of the possibilities! more

IPv6 Over Satellite: Pie in the Sky?

I am writing this from the Satellite 2008 conference in Washington, D.C. As I make my way through the exhibits, I see many vendors advertising IP capabilities in their hardware products or network services. But when asked about IPv6 support, the common reply is a not so believable "it is on our roadmap" followed by a somewhat vague delivery date. Although IPv6 development has been slow across the board, it appears to be moving even more slowly in the satellite world... more

The Internet’s Weakest Link

This week two major transoceanic cables experienced outages that may last several days. The outages provide a reminder that several Internet bottlenecks exist where these cables make landfall. When one thinks of bottlenecks in telecommunications the first and last mile come to mind. Yet equally vulnerable are the last few 1000 feet of submarine cable links. more

How a Security Specialist Fell Victim to Attack

Our systems are protected by state of the art security systems. Our SPAM filter is a hardware device that is nearly 100% effective. It also helps in protecting against Spyware and other malicious code. Our Firewall is similar to those you would find in large corporations. Our Anti-Virus system has served us well and we've not had problems with virus for years. ...Two weeks ago, I received approximately twenty e-mails requesting the review and approval of Defending The Net articles published on other sites. I thoroughly review the e-mails to make sure they seem legitimate... more

Study Finds Spammers Use P2P Harvesting to Spam Millions

A recent study conducted by Blue Security reports how Internet users can unknowingly expose their contacts' emails addresses to Spammers while sharing files, music, games and DVDs over Peer-to-Peer (P2P) networks. The study has uncovered hundreds of incidents where files containing email addresses were made accessible in P2P networks. 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

The Risk of Descriptive Subdomains: Are We Revealing Too Much?

Subdomains help organizations sort different sections of their websites neatly. Looking at the subdomains of some websites, for example, we usually see subdomains like shop[.]domain[.]com and blog[.]domain[.]com, which help users navigate the sites efficiently. But we couldn't help but notice subdomains that might be revealing a lot about a company's Internet infrastructure and resources. more

What Are the Connected Assets of Confirmed Fake FBI Domains?

Two months ago, the Federal Bureau of Investigation (FBI) alerted the public to a list of domains that could easily be mistaken to be part of its network. The list of artifacts contained a total of 92 domain names, 78 of which led to potentially malicious websites, while the remaining 14 have yet to be activated or are no longer active as of 23 November 2020. more

What Trademark Owners Need to Know to Avoid Reverse Domain Name Hijacking

A cybersecurity company recently attempted reverse domain name hijacking for an exact match domain name of its brand, and in so doing, failed in both its bid to take ownership of the domain and potentially damaged their reputation by using this somewhat nefarious tactic and abusing the Uniform Domain Name Dispute Resolution Policy (UDRP) process. more

Beware of Abandoned Domain Names in this Turbulent Time and as the Global Economy Changes

The outbreak of COVID-19 has caused worldwide disruption -- for whole nations and their economies. Unfortunately, there will be some side effects for businesses. A number of brands will disappear from the streets and shelves, as businesses that fail to weather the storm will have to fold. Companies that do survive will likely focus more on their core markets, pulling brands out of higher risk, less profitable markets... more

At the Crossroads: The State of Domain Registration Data Services

The Internet's users rely on domain name registration information for vital purposes, including providing security, problem-solving, and legal and social accountability. The data is so important that users perform more than two billion WHOIS queries every day. ICANN has instituted new data policies over the last two years, and is also directing a migration to a new technical protocol, RDAP, that will replace WHOIS access in the near future. So at this critical juncture, how is it all going? more