We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
80,258 News Articles

5 billion spam emails boost stock prices

Pump-and-dump scam hits inboxes

A major spam outbreak hit the internet on 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 percent 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 percent, 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 email 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 email 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 email wallpaper.

www.networkworld.com


IDG UK Sites

Acer Aspire R11 review: Hands-on with the 360 laptop and tablet convertible

IDG UK Sites

Apple Watch release day: Twitter reacts

IDG UK Sites

See how Framestore created a shape-shifting, oil and metal based creature for Shell

IDG UK Sites

Apple Watch buying guide, price list & where to buy today: Which Apple Watch model, size, material,?......