Spam outbreak hits 5 billion messages

Stock pump-and-dump messages account for 8% of all spam sent Wednesday

A major spam outbreak hit the Internet Wednesday causing the stock it was pumping to jump significantly in trading volume, according to communications security company IronPort.

The spam blast, which the company says was one of the ten largest so far this year and represents 8 % of all spam sent in the past day -- roughly 5 billion messages -- was designed to entice recipients into purchase a German stock. That stock rose in trading volume by 20%, IronPort says, presumably because of the spam.

This technique is called stock pump-and-dump spam, in which the spammer blasts messages persuading people to buy a penny stock, then once the stock price goes up the spammer sells his shares at a profit.

The German stock spam message was cleverly designed, officials at IronPort say, using a professional looking PDF attached to the e-mail message that looks like an investment newsletter. This was the first time IronPort has seen spammers using PDFs to attempt to fool recipients, it says.

Lately spammers have been using images, such as JPG files embedded in the body of an e-mail that can readily thwart antispam filters not capable of searching such images. Last week, security vendor Secure Computing reported spammers had begun evading spam filters by presenting messages as part of an e-mail wallpaper.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Cara Garretson

Network World
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?