Spam wars

Anti-spam vendors can't thwart the spam boom. Is it time for an e-mail tax?

Revenge of the e-mail tax

Holding back the spam tide may require shaking up the world of e-mail. Harbaugh calls for striking at the heart of how spammers ply their trade; currently, spam is blasted to the masses in three ways: via registered e-mail servers, mail servers that allow anonymous forwards, and botnets of subverted computers.

With registered e-mail servers, many ISPs block servers that send messages in violation of the CAN-SPAM Act. But the law only applies within the U.S., and spam is legal in many countries. It's also difficult for ISPs to preemptively block spam without opening themselves to liability charges. "The only practical way to stop this kind of spam is charging per message," says Harbaugh. "If ISPs are being charged per message, it gives them a real economic incentive to patrol their networks and stop spammers quickly."

Charging for messages is a sensitive issue. It's likely that junk-mail advertisers will happily pay fees and push out even more spam. And then there's the thorny idea of taxing the Internet. "The Internet is free to everyone," Forrester's Wang says. "Besides, spam is not getting worse ... the majority of the threat now lies in the Web channel -- not e-mail channel -- such as fake Web sites and hacked real Web sites."

Undaunted, Harbaugh also wants to take a hard-line approach to mail servers that allow anonymous forwards. His suggestion: make all mail servers comply with security measures that block anonymous forwarding. By some estimates, a server that doesn't block anonymous forwarding will be exploited by spammers within minutes. Revised SMTP protocols would make it easier to trace people who are illegally sending spam. And message charges would provide a financial incentive for people with mail servers to follow the new rules.

Last, botnets have hijacked a million computers that send countless spam usually without a computer owner's knowledge. These compromised computers need a firewall (which is readily available and free) that stops outgoing SMTP. Yet fines for computer owners who don't install the firewall would be difficult to levy, since many of the compromised computers are home computers.

"There would be political consequences," admits Harbaugh, as he considers a potential newspaper headline: "82-year-old grandmother charged [US]$21,000 for having a virus!" But ISPs could block outgoing SMTP for their residential customers, he says, especially if spam sent from compromised computers is costing ISPs money in the form of message charges.

While a message charge is futuristic fodder, it's this kind of thinking that will ultimately undo spam -- not necessarily a more effective e-mail appliance.

And there's no question that IT security risks and budget burdens caused by the spam boom have forced companies to make spam reduction a priority. Companies are now willing to try new things even at the risk of upsetting users. For instance, some companies block all incoming messages from EarthLink, MSN, and other providers that host spammers, even if it means they block legitimate e-mails, too.

"There's definitely still room for innovation," says Harbaugh. "Anything that the anti-spam vendors use is generally bypassed by the spammers in relatively short order. So it might be more accurate to say that innovation is critical and ongoing."

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Tom Kaneshige

InfoWorld
Comments are now closed.

Latest News Articles

Most Popular Articles

Follow Us

GGG Evaluation Team

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell

LIFEBOOK UH574

The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi

STYLISTIC Q702

The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott

STYLISTIC Q702

My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

Resources

Best Deals on GoodGearGuide

Compare & Save

Deals powered by WhistleOut
WhistleOut

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?