Spam

Spam Volumes In 2010

I started hearing various people comment about lower spam volumes sometime in mid December. This isn't that unusual, spam volumes are highly variable and someone is always noticing that their spam load is going up or going down. The problem is extrapolating larger trends from a small selection of email addresses. more

Wikileaks DDoS of Spamhaus: Political Activism at Its Dumbest

A week ago, Paul Vixie wrote a thoughtful piece on the morality of DDos, for both sides of the equation of the Wikileaks issues. In it he summarizes things nicely: "Denial of service is not merely a peaceful protest meant to garner attention for a cause. Denial of service is forcible and it is injurious. It is not like any form of civil disobedience, but rather it is criminal behaviour more like looting." Well said, Paul... more

Canada’s Anti-spam Bill C-28 is the Law of the Land

It's been a long time coming, but Canada has an anti-spam law, and one, which sets a new world standard, and a tough, but fair, opt-in protocol for everyone in North America who sends commercial email and other electronic messages. Yesterday, The Canadian Senate voted to accept Bill C-28, and today, December 15, at 13:00 eastern, it will be given Royal Asset of the Governor General of Canada, His Excellency the Right Honourable David Johnston. more

Cyber Crime: It’s All About Data (Part 1)

Cyber crime = crime. How do we make police forces understand this and how to get it prioritized? In this series of blogs I am looking into whether aggregating data can change the way cyber crime is approached and prioritized. At a seminar at the IT Security trade fair in Utrecht detective super intendant Charlie McMurdie, head of the cyber crime unit of the London Metropolitan police, said that cyber crime was recently prioritized by the UK government. She also said the following and I'm allowed to quote this... more

.COM - The Riskiest Top-Level Domain? (Part 2)

Following up from my post yesterday, I thought I would take a look at how spammy each particular TLD is. At the moment, I only track 8 TLD's - .cn, .ru, .com, .net, .org, .info, .biz and .name. To check to see which one is the spammiest, I took all of our post-IP blocked mail and determined how many times those messages occurred in email, and how many times that email was marked as spam... more

The Spamhaus Whitelist

For several months I have been working with the Spamhaus project on a whitelist, which we announced to the public this week. While this is hardly the first mail whitelist, our goals are somewhat different from other whitelists. Think of e-mail as ranging from inky black to pearly white... more

Policy Failure Enables Mass Malware: Part II (ICANN and OnlineNIC)

On Wednesday September 29th at 1PM there will be a meeting in the Old Executive Building in Washington D.C. with Registries and domain Registrars to discuss illegal Internet sales of prescription drugs. ICANN was originally invited but declined because citing "inappropriateness" . One "U.S." Registrar who definitely will not be in attendance is OnlineNIC more

Why are *.edu’s Compromised so Much?

When it comes to the problem of outbound spam, one of the experiences that I have, and this was reaffirmed at TechEd, is that the number one source of compromised accounts are educational institutions. That is to say, whenever we have an outbound spam problem and have to hunt down where it is coming from, the highest number of these accounts are phished accounts/credentials from users at an educational institution. Why is this? Why does so much spam originate from universities? more

ISPs Are Speaking, Is Anyone Listening?

Lately I've been seeing and hearing a lot of quiet warning noises coming from ISPs and spam filtering companies about sender behaviour. I believe they're forecasting changes in how ISPs treat commercial email and what new issues senders are going to have to negotiate. The short version is that commercial mail is a mixed bag. more

Email’s Not Dead, Neither is Spam

Over the past few years, we have seen a plethora of over-hyped articles in the popular press and blogosphere crowing wrong-headedly about how 'email is dead'. Social networks like Facebook and Twitter, new and as-yet unproven technologies are the supposed death-knell for our old reliable friend, e-mail. I wrote about the rumours of email's death being exaggerated back in 2007 in response to such inanity. Since then, we've seen such a cornucopia of silliness of the 'Such & such is killing email' variety that Mark Brownlow compiled a bunch of articles, and their rebuttals at his excellent site... more

Cyber Security and the White House, Part 2 - Cyberwarfare

This is a follow-up to my previous post on Cybersecurity and the White House. It illustrates an actual cyberwarfare attack against Estonia in 2007 and how it can be a legitimate national security issue. Estonia is one of the most wired countries in eastern Europe. In spite of its status of being a former Soviet republic, it relies on the internet for a substantial portion of everyday life -- communications, financial transactions, news, shopping and restaurant reservations all use the Internet. Indeed, in 2000, the Estonian government declared Internet access a basic human right... more

Warning, Danger Lurks Here: Exploring DKIM/ADSP Edge Cases - Missing message-id

This article is the first in an occasional series on DKIM/ADSP edge cases that may not be generally recognized or understood. Many people advocate DKIM/ADSP adoption without fully recognizing potential implementation and operational issues. The fact is that the email messaging environment is fraught with opportunities for poor outcomes because of common practices that need to be considered or poorly understood implementations that are not considered... more

How Hard Is It to Deploy DKIM?

It's coming up on two years since the DomainKeys Identified Mail (DKIM) standard was published. While we're seeing a certain amount of signed mail from Google, Paypal, and ESPs, there's still a long way to go. How hard is it to sign your mail with DKIM? The major hurdle might seem to be getting mail software that can sign outgoing mail. more

Searching for Truth in DKIM: Part 1 of 5

DomainKeys Identified Mail (DKIM) is the leading email authentication technology, supported by major ISPs including Google, AOL, and Yahoo! (who invented its predecessor), popular mail server software like Sendmail, and many of the best minds in email technology. But if you peruse the archives of the IETF DKIM mailing list, or start up a conversation at MAAWG, it might appear that there's still a lot of disagreement about what a DKIM signature actually means. more

Reply-All Creates a DDoS Attack?

One can read in an Associated Press article that the US State Department have their email system bogged down due to too many people use the Reply-All function in their email client. IT Departments have asked people to not use Reply-All and also threaten with disciplinary action. To me, that is the wrong path forward. more