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Reverse WHOIS: A Powerful Process in Cybersecurity

WHOIS History API: Powering Domain Investigations

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

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IPv6, 5G and Mesh Networks Heightening Law Enforcement Challenges, Says Australian Government

In a submission to the Joint Committee on Law Enforcement's inquiry into Impact of new and emerging information and communications technology, the Department of Home Affairs and Australian Criminal Intelligence Commission (ACIC) warn law enforcement will be degraded by a number of new technologies. more

Who is Blocking WHOIS?

On April 16 ICANN issued a breach notice to Turkish Registrar Alantron for not consistently providing access to its WHOIS database via Port 43, a command-line query location that all Registrars are required to supply under conditions of their contract with ICANN under section 3.3.1. Four days later they issued a breach to Internet Group do Brazil for the same problem. ... The WHOIS record, as we all know, is a massive fraud with illicit parties filling records with bogus information and hiding behind anonymity. more

We Need You: Industry Collaboration to Improve Registration Data Services

For more than 30 years, the industry has used a service and protocol named WHOIS to access the data associated with domain name and internet address registration activities... The challenge with WHOIS is that it was designed for use at a time when the community of users and service operators was much smaller and there were fewer concerns about data privacy. more

A Brief Look at the Domain Attack Surface of Streaming Media Companies

The term "attack surface" is often heard in cybersecurity conversations. It refers to the sum of all possible attack vectors or the vulnerabilities that threat actors can exploit to penetrate a target network or damage an organization somehow. An unused and forgotten subdomain, for instance, can become an attack vector when taken over. Certain categories of companies have very large attack surfaces. Such is the case of streaming media businesses like Netflix and HBO Max. more

More than 99% of Email is Spam?

One of my pet peeves is the headline "n %" of email is spam, it is inherently misleading, and conveys no useful data. I guess it makes for great newspaper headlines then! On our servers looking at one email address for 4 hours, we saw 208 attempted connections for SMTP traffic referring to this email address. ...One can't measure spam in relation to the amount of genuine email, because the amount of genuine email is not connected to the amount of spam... 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

With No Privacy Standards Who Knows Who Is Abusing The Whois Database

John Banks is a loan officer in New York. John's supervisor recently warned John about the potential number of bad loans he may be carrying as part of his portfolio. To dump some of the bad loans he might be carrying, John came up with a scheme. He pointed his web browser to www.whois.org and entered terms denoting disease or poor health such as 'cancer' and 'illness'. This query on the Internet's WHOIS database reported results of names and addresses of domain name owners who had developed websites devoted to providing information on certain serious illnesses. John compared these names and addresses with those in his portfolio of loans. For the matches, he canceled the loans and required immediate payment-in-full. more

There Is No “Spam Problem”

This month I thought I could feel smug, deploying Postfix, with greylisting (Postgrey), and the Spamhaus block list (SBL-XBL) has reduced the volume of unsolicited bulk commercial email one of our servers was delivering to our clients by 98.99%. Alas greylisting is a flawed remedy, it merely requires the spambots to act more like email servers and it will fail, and eventually they will... more

An Institute to Combat DNS Abuse

Over the last few years, it's become clear that abuse of the Domain Name System -- whether in the form of malware, botnets, phishing, pharming, or spam -- threatens to undermine trust in the Internet. At Public Interest Registry, we believe that every new .ORG makes the world a better place. That means anything that gets in the way of that is a threat, and that includes DNS Abuse. more

The Extent of DNS Services Being Blocked in China

The most recent episode of The Ask Mr. DNS Podcast offers up some disturbing corroborating evidence as to the extent of DNS filtering and outright blocking occurring in China. VeriSign's Matt Larson and InfoBlox's Cricket Liu, who co-host the geeky yet engaging and extremely informative show, held a roundtable discussion including technical experts from dynamic name service providers (better known as "managed DNS" services) DynDNS, TZO, No-IP, and DotQuad, as well as Google and Comcast. more

DNS: An Essential Component of Cloud Computing

The evolution of the internet is anchored in the phenomenon of new technologies replacing their older counterparts. But technology evolution can be just as much about building upon what is already in place, as it is about tearing down past innovations. Indeed, the emergence of cloud computing has been powered by extending an unlikely underlying component: the more than 30-year-old global Domain Name System (DNS). more

Follow a Phishing Case in Real Time: postfinances.com / Swiss Post

It is just another phishing case. Why should I care? I happened to receive my own copy of the phishing email message. Most Internet users will just smile bitterly before deleting it. I checked it to see why it had gone through the spam filters. It had no URL in the text but a reply-to address. So it needed a valid domain name, and had one: postfinances.com. PostFinance (without trailing "s") is the payment system of the Swiss Post. It has millions of users. more

The Criminals Behind WannaCry

359,000 computers infected, dozens of nations affected world-wide! A worm exploiting a Windows OS vulnerability that looks to the network for more computers to infect! This is the most pernicious, evil, dangerous attack, ever... Queue the gnashing of teeth and hand-wringing! Wait, what? WannaCry isn't unprecedented! Why would any professional in the field think so? I'm talking about Code Red, and it happened in July, 2001. more

EFF on Goodmail: Further Confusing an Already Confused Issue

Cindy's piece on the EFF website seems to be a bit of a pastiche, with elements taken out of various articles (some outright wrong, some merely misinformed) that have been doing the rounds of the media for quite a while now about Goodmail. She started off comparing AOL and Goodmail with the old email hoax about congress taxing email. That same line was used in a CircleID post by Matt Blumberg, CEO & Chairman of Returnpath... Various other quotes from different places - Richard Cox from Spamhaus on CNN for example. However a lot of the quotes in those articles are being based on wrong or out of context assumptions, starting with one that goes "AOL is going to remove all its existing whitelists and force people to use Goodmail". more

Why You Must Learn to Love DNSSEC

It's been nearly two months since the high profile BGP hijack attack against MyEtherwallet, where crypto thieves used BGP leaks to hijack MEW's name servers, which were on Amazon's Route53, and inserted their own fake name servers which directed victims to their own fake wallet site, thereby draining some people's wallets. It generated a lot of discussion at the time... What isn't fully appreciated is that attack has, in fact, changed the game somewhat... more