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
After they finished the tenth installment of their enormous multi-volume history, The Story of Civilization, Will and Ariel Durant wrote a set of thirteen essays entitled The Lessons of History. I happened to pick up this volume yesterday; it's both slim and sweeping. The Durants loved history, and wanted to show their readership what waves and tensions and trends they perceived. It's not a great book, but it's an undeniably forceful one. One essay discusses the essential moral characteristics of individuals, listing six traits and providing "positive" and "negative" descriptions of ways in which people act. more
Anyone who has been watching the technology industry for more than a couple of years quickly learns to recognize FUD: Fear, Uncertainty and Doubt. FUD is (apparently) widely believed to be an effective marketing technique, especially when it comes to security, privacy, or scarcity. But the FUD often falls flat. Scarcity, in particular, is rare on the internet -- even rarer than privacy or security. There's constant FUD about scarcity of bandwidth, but the pipes get upgraded. Attempts to impose artificial scarcity through paywalls or other devices inevitably fail in the face of free alternatives. Even the scarcity of IPv4 addresses, which have indeed run out at the top, hasn't affected end users at the bottom yet -- and probably won't, for a long time. more
Total number of Business Email Compromise (BEC) related crimes have reached epidemic levels, at nearly $3.1 billion in losses and involving 22,143 victims worldwide since January 2015, according to a new FBI report. more
When a user of a large mail system such as AOL, Yahoo, or Hotmail reports a message as junk or spam, one of the things the system does is to look at the source of the message and see if the source is one that has a feedback loop (FBL) agreement with the mail system. If so, it sends a copy of the message back to the source, so they can take appropriate action, for some version of appropriate. For several years, ARF, Abuse Reporting Format, has been the de-facto standard form that large mail systems use to exchange FBL reports about user mail complaints. more
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
What happens when you open an email and allow it to display embedded images and pixels? You may expect the sender to learn that you've read the email, and which device you used to read it. But in a new paper we find that privacy risks of email tracking extend far beyond senders knowing when emails are viewed. Opening an email can trigger requests to tens of third parties, and many of these requests contain your email address. more
The best part is ... this isn't one of those 'now that I've got your attention' tricks, like one of those old "free beer" posters; there really is a ton of stuff happening above the 49th parallel this summer. To begin with, as a precursor to Canada's Anti-spam Law coming into effect later this year, the Office of the Privacy Commissioner, the Canadian Radio-television Telecommunications Commission, and Industry Canada have all issued regulations, the latter two in draft form with an RFC. more
CAUCE, the Coalition Against Unsolicited Commercial Email, has looked back at the notable events of the last decade in our industry. Each year/link in the post explodes to a discrete blog entry with a month-by-month break-out of notable events. more
For some time now I have contended that Confirmed Opt-in, 'COI' is dead, or at the very least on life support. It certainly is not a major factor in the continued relation between sender and receiver; that relies far more heavily on the ongoing and historical reputation of the mailer and the mail stream. Proof of permission doesn't scale; end-users complain all the time, but it is rare if not impossible for a receiving site to request proof when an end-user complains, then the receiver complains to the sender, and the sender says that permission was actually in place. Much more commonly, the sender unsubscribes the address and moves on, permission or not, since the subscriber doesn't want the mail any more. But then, I recently had two eye-opening experiences... more
Great article by the BBC about email vs. mobile apps in China -- and why email is losing out to the most popular apps. It's important for Westerners such as myself to remember that most of the world did not first interact with the Internet via desktop computer. In most emerging markets, people leapfrogged computers altogether on their way to using mobile apps. more
Goodmail Systems made a big splash last week when AOL and Yahoo announced that they will be giving preferential treatment to mail that uses Goodmail's CertifiedEmail service, claiming (implausibly) that this has something to do with stopping spam... Since Goodmail charges senders for each message, some people see this as the end of e-mail as we know it. I have my concerns about Goodmail, but a lot of the concerns are either overblown or based on bad reporting... more
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
Remember when Gmail launched in 2004, and everyone said it was going to kill Hotmail, Yahoo!, and AOL? Six years later, and this chart shows pretty clearly that while gmail has grown, only AOL's pageviews have fallen. The rest have held fairly steady. So what's everyone freaking out about? more
On Monday the 3rd, California state Senator Dean Flores held a hearing of the E-Commerce, Wireless Technology, and Consumer Driven Programming committee grandly titled AOL: You Have Certified Mail, Will Paid E-mail Lead to Separate, Unequal Systems or is it the Foolproof Answer to Spam?. The senator's office said they were very eager to have me there, to the extent they offered to fly me out from New York, so since I happened to be on the way home from ICANN in New Zealand that weekend, I took a detour through Sacramento. Sen. Florez conducted the hearing, with Sens. Escutia and Torlakson sitting in briefly. Unfortunately, Sen. Bowen, who is very well informed on these topics, wasn't there. There were five panels of speakers, and I got to lead off... more
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