Email

CNN Spam Outbreak Quickly Morphing Into a New Breed

This past week we have been seeing some heavy CNN spam -- that is, spam in the form of breaking news stories from CNN.com... These all look like legitimate news stories, and indeed, they probably are taken straight from an actual CNN news bulletin (I don't subscribe so I wouldn't know). Indeed, the unsubscribe information and Terms of Use actually link to actual CNN unsubscribe pages. However, if you mouse-over all of the news links, they go to a spam web page wherein the payload is either a spam advertisement or you click on another link to download a file and flip your computer into a botnet. more

Email Portability, DKIM, and Socio-Political Implications on Tech Development

A few years ago, cell phone portability was introduced in the United States which caused a major shift in the market. The same thing happened this past year in Israel, following a major battle involving the cell carriers, consumer groups and the Israeli parliament (The Knesset). What if the same happened with email addresses? Ridiculous, you say? May be so, but there is chatter here in Israel to create a law which forces the local service providers hands to do just that. more

ACLU, Anti-Spam Laws, and the First Amendment

In an article published by the Technology Liberation Front, Cato Institute adjunct scholar Tim Lee dissects a recent argument by the American Civil Liberties Union (ACLU) regarding free speech & anti-spam laws. It's been interesting to watch the ACLU wrestle with anti-spam legislation. Their entire purpose is to work through the legal system to protect our civil rights, as defined in the First Amendment -- which is why I've been a card-carrying member since before I was old enough to vote... more

Jeremy Jaynes Gets One More Chance

n 2004 Jaynes became the country's first convicted spam felon under the Virginia anti-spam law. He's been appealing his conviction ever since, most recently losing an appeal to the Virginia Supreme Court by a 4-3 decision in February. As I discussed in more detail at the time the key questions were a) whether the Virginia law had First Amendment problems and b) whether Jaynes had standing to challenge it. The court answered No to b), thereby avoiding the need to answer a), the dissent answered Yes to both. more

Sender Address Verification: Solving the Spam Crisis

There are many companies in the spam-fighting business and most, if not all, claim to be hugely successful. Yet spam is exponentially more prevalent today than it was just 2 years ago. How can one conclude that today's anti spam solutions are working? This year spammers will use machine-generated programs to send trillions of unsolicited email. Thankfully, a new anti-spam technology has made its way into the market. more

A Case of Mistaken Identity

As far as facebook is concerned, your email is your identification. This is true for other social networks like linkedin, and is slowly catching on to many other Web 2.0 services. It actually makes a lot of sense that your unique identifier (your "ID") would be your email -- it's unique by definition, it's easy to remember and most services need the email information anyway... So if email is destined to become the equivalent of your social security number or identification number (depending on which country you live in) how do we proof check that the email address we typed does not contain any typos? more

If It Spams Like a Duck…

We've been wondering what e360 hoped to gain with their recent lawsuits against Spamhaus and others. If they were trying to clarify the right of ISPs to protect their users from spam, then they've certainly done a good job -- especially in this particular case. If it wasn't clear before, Judge Zagel's explanation should satisfy even the most pedantic of filtering opponents: "ISPs acting in good faith to protect their customers are not liable for blocking messages that some spammer claims are not spam..." more

An Open Letter to Yahoo!‘s Postmaster

In June 2004, Yahoo! and a number of other companies got together to announce the Anti-Spam Technical Alliance or ASTA. While it appears to have been largely silent since then, ASTA did at least publish an initial set of best practices the widespread adoption of which could possibly have had some impact on spam... The majority of these are clearly aimed at ISPs and end users, but some are either generally or specifically relevant to email providers such as Yahoo!, Google or Microsoft... The problem: Since February this year, we have been receiving a significant quantity of spam emails from Yahoo!'s servers. In addition to their transport via the Yahoo! network, all originate from email addresses in yahoo.com, yahoo.co.uk and one or two other Yahoo! domains. Every such message bears a Yahoo! DomainKeys signature... more

Trust in Email Begins with Authentication

As most CAUCE supporters already know, forging 'From:' or other commonly seen email headers is trivially easy. It's one of the most frustrating oversights in the creation of Internet email technology -- though of course that's only obvious in hindsight; it was just fine for the pre-Internet networks of the late 1970s and early-mid 1980s. Since then, things have changed -- and the most interesting recent technological advancements in email have been in the realm of sender authentication, which encompasses ways to verify that the apparent sender of a message actually is the entity which sent it. more

Circumstantial Evidence of Yahoo’s CAPTCHA Being Broken

A couple of weeks ago, I read an article on Yahoo that some outfit in Russia claimed to have broken Yahoo's CAPTCHA for creation of new email accounts. Another blogger wrote that it was unlikely that the spamming outfit had achieved 100% success at breaking the CAPTCHA. Yet, in the past couple of weeks, I have noticed something that would seem to confirm the theory... more

Microsoft’s Offer to Buy Yahoo: An Anti-Spam Point of View

Last Friday, Microsoft made an unsolicited offer to buy Yahoo for $31 per share, representing over a 50% premium from Yahoo's then-share price. As an employee working for Microsoft in Exchange Hosted Services (i.e. spam filtering), I'd like to comment on this buyout offer. Leaving aside the question of whether or not this is a good deal for shareholders and what Microsoft's true motivations are for buying Yahoo (namely, to become the number 2 player in the search market), I'd like to look at it from an anti-spam point of view. more

Spam Kings: Book Review (Part 2)

I'd like to continue on in my review of the book Spam Kings (read part 1) and make some more comments, particularly regarding the antispammers. One thing that I really liked about the book is learning the history of some of the spam tools. I was never a participant on NANAE (news.admin.net-abuse.email; a USENET newsgroup which discusses e-mail spamming), that was before my antispam time. But I was intrigued by its history. People would gather together and discuss spammers and tools for stopping them, and sometimes spammers would stop by and the flame wars would ensue. more

Do Spammers Change Their Tactics Based on Recipient Verification? Yes, They Do

Or, to be more precise, it sure looks like they do. I wrote on another post on a publicly available spam tool, and I mentioned that I came across a page that allowed people to verify whether or not an email address is actually live. The question naturally arises: do spammers clean up their email contact lists based upon whether or not the address is legitimate? Spammers would have an incentive to do this... Do we actually observe spammers changing their sending patterns? I believe that we have evidence that they do. 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

Gmail as an Email Honeypot

You all remember cybersquatting, a popular sport in the late 90s, right? McDonalds.com, JenniferLopez.com, Hertz.com and Avon.com thankfully all point to the right web sites today, but thaiairline.com, mcdonald.com, luftansa.com, gugle.com, barnesandnobles.com and other misspellings are fake web sites intended to trap the casual surfer with a hand that's a bit too much quicker than the eye... If you want to go to the McDonalds web site, you don't even spend the 10 seconds to look it up -- you will type McDonalds.com and expect to see the latest dollar meal menu. But the same is true for the other popular form of communication -- email... more