Cybersecurity

Some Notes on the .XXX Top-Level Domain

Yesterday the ICANN board discussed and approved ICANN staff to enter into negotiations with ICM Registry, Inc. for the .XXX Top Level Domain (TLD). I'm sure there will be a longer more complete presentation from ICANN later about this, but as an individual board member I thought I'd post a quick note before people got carried away with speculation based on a lack of information. more

Writing the Next Chapter for the Historic One-Time Pad

The OTP, or One-Time Pad, also known as the Vernam cipher, is, according to the NSA, "perhaps one of the most important in the history of cryptography." If executed correctly, it provides uncrackable encryption. It has an interesting and storied history, dating back to the 1880s, when Frank Miller, a Yale graduate, invented the idea of the OTP. Communication was expensive and difficult in the age of telegrams, and few messages were easily encrypted. more

The Cycle of E-Mail Security

Stepping back from the DMARC arguments, it occurs to me that there is a predictable cycle with every new e-mail security technology... Someone invents a new way to make e-mail more secure, call it SPF or DKIM or DMARC or (this month's mini-fiasco) PGP in DANE. Each scheme has a model of the way that mail works. For some subset of e-mail, the model works great, for other mail it works less great. more

End of the World/Internet on 31-March-2012?

Well... Maybe not the world, but the Internet it seems. According to a Pastebin letter, Anonymous announced they will black-out Internet on 31st of March. They even explained how to do it by attacking the DNS Root Servers on Internet using a reflected amplification attack. If this is successful, the root DNS servers will become unresponsive and cannot handle any other requests... more

Anonymous Plans to Go After DNS Root Servers. What Will Be the US’s Response?

The other day on pastebin, snippets of an email conversation were posted with members of the hacking group Anonymous discussing plans to conduct DOS attacks against the Internet's root name servers... Going after the Internet's root servers is a very bold move by Anonymous. Whereas before they were "merely" breaking into companies that they believed were acting contra to the hacker ethic, going after the Internet infrastructure is another thing altogether. Why? 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

DNS Clients Do Request DNSSEC Today

After the DNS root zone was finally signed and a number of Top-Level Domains (TLDs) began signing their zones, we were curious to see how many clients actually request DNSSEC information. We looked at the RIPE NCC server that provides secondary service to several country code top-level domains (ccTLDs). more

How Do You Do Secure Bank Transactions on the Internet?

Banks love it when their customers do their transactions on line, since it is so much cheaper than when they use a bank-provided ATM, a phone call center, or, perish forbid, a live human teller. Customers like it too, since bank web sites are usually open 24/7, there's no line and no need to find a parking place. Unfortunately, crooks like on line banking too, since it offers the possibility of stealing lots of money. How can banks make their on line transactions more secure? more

DKIM for Discussion Lists

There's a pernicious meme floating around that DomainKeys Identified Mail (DKIM) doesn't work with discussion lists, particularly those hosted on common open source software packages like MailMan. It's particularly odd to see this claim after I set it up successfully on a stock Debian server in less than half an hour, just a few weeks ago. Here's how it can, should, and does work. more

Another Attack, Another Reason for the Urgency of DNSSEC Adoption

News broke this week about an attack in Puerto Rico that caused the local websites of Google, Microsoft, Yahoo, Coca-Cola, PayPal, Nike, Dell and Nokia to be redirected for a few hours to a phony website. The website was all black except for a taunting message from the computer hacker responsible for the attack... more

Identity Theft of Root Name Servers, Reason Unknown

There have been a number of attacks on the root name servers over the years, and much written on the topic. (A few references are here, here and here.) Even if you don't know exactly what these servers do, you can't help but figure they're important when the US government says it is prepared to launch a military counterattack in response to cyber-attacks on them. more

Phishers Now Targeting Domain Registrars

This is an issue of some concern and should be watched carefully: phishers are now trying to get passwords of domain registrants (domain owners). Currently, correspondents inform me that GoDaddy is the target, but there's no reason to think the phishers won't expand to other registrars. Normally, phishers go after bank accounts or other financial information, or sometimes the online accounts of users so that they may send spam. It's not known precisely why phishers are after domain registration information, but the possibilities are chilling... more

Another Try at Proof-of-Work e-Postage Email

Another paper from the Fifth Workshop on the Economics of Information Security, (WEIS 2006) is Proof of Work can Work by Debin Liu and L, Jean Camp of Indiana University. Proof of work (p-o-w) systems are a variation on e-postage that uses computation rather than money. A mail sender solves a lengthy computational problem and presents the result with the message. The problem takes long enough that the sender can only do a modest number per time period, and so cannot send a lot of messages, thereby preventing spamming. But on a net full of zombies, proof of work doesn't work. more

IDNs and IE7 and the Coming Storm

If you're brave, today you can finally download the Internet Explorer 7 public beta. Why should you be interested? Not because the browser's wonderful. It isn't -- initial reports are that it's not ready for prime-time. But you might be interested to know that as of today, users of IE will be able to use internationalized domain names (IDNs). ...Many other browsers are already IDN-capable, including Firefox, but most people in the world use Explorer. Think China, Japan, India. Think most of the world's population... Think of millions of new Internet users working in their own language, customers for commercial goods and services. But think also about intellectual property nightmares, think about phishing, think about whether there's one interoperable Internet, or several Internets acting very weird. These issues and others will become big news when people start using IDNs massively -- and with support from Internet Explorer, that's about to happen. more

What’s in a Name?

Internet domain names are truly bizarre. There is nothing especially remarkable about them from a technical perspective, but from a social and political perspective they are all sorts of fun. We can have arguments over control of the DNS root, arguments over whether names are property, arguments over innate rights to specific names, arguments over a registrar's right (or lack thereof) to exploit unregistered names for private gain, and many more arguments besides. In this article, I'd like to explore the argument-space rather than defend any particular position in it. In so doing, I hope to illuminate some novel (or under-emphasised) perspectives on the matter. more