News
News
11/23/2004
01:44 PM
Connect Directly
RSS
E-Mail
50%
50%

Ad Firm Describes Hacker Attack, Cites Internet Explorer As Security Risk

A German online ad firm details an attack that infected some visitors to its clients' sites with the MyDoom/Bofra worm, exploiting an Internet Explorer 6.0 security bug.

More details came to light Tuesday about the weekend attack that compromised a German Web advertising company's server and infected users who visited Web sites run by the firm's clients with the MyDoom/Bofra worm.

According to a statement released last Monday night by Falk eSolutions, the attack began early Saturday morning when an attacker managed to infiltrate the server and place code that redirected ad requests to a third-party site.

That site was http://search.comedycentral.com, which had also been compromised by the attacker. Neither Falk nor the SANS Institute's Internet Storm Center, which tracked and helped investigate the attack, have any idea when Comedy Central's site has cracked. As of mid-morning Tuesday, Comedy Central's search site was offline.

"It looks like Comedy Central and perhaps some other sites were compromised first, followed by Falk. Then, Falk's site was configured to redirect visitors to Comedy Central," said Marcus Sachs, the director of the Storm Center, in a statement.

Falk continued to play down the extent of the problem, saying potential redirects to the exploit code on the Comedy Central server were less then 2 percent of the ad requests from European client sites, and under 0.1 percent of those from U.S. clients during the six-hour span of the attack.

To some extent, Falk put the blame on Microsoft, whose Internet Explorer 6.0 browser was exploited by the attack when the redirected requests downloaded the MyDoom/Bofra worm instead of ads to PCs. The bug in IE, dubbed the IFRAME vulnerability, has not yet been patched,

"Users should consider using an alternate browser to Internet Explorer (such as Opera or Firefox) or upgrading their Microsoft operating system [to Windows XP SP2], Falk said in its statement.

Falk also said that it considers the hack a criminal matter, and has notified local authorities in Germany.

Comment  | 
Print  | 
More Insights
IT's Reputation: What the Data Says
IT's Reputation: What the Data Says
InformationWeek's IT Perception Survey seeks to quantify how IT thinks it's doing versus how the business really views IT's performance in delivering services - and, more important, powering innovation. Our results suggest IT leaders should worry less about whether they're getting enough resources and more about the relationships they have with business unit peers.
Register for InformationWeek Newsletters
White Papers
Current Issue
InformationWeek Tech Digest September 24, 2014
Start improving branch office support by tapping public and private cloud resources to boost performance, increase worker productivity, and cut costs.
Video
Slideshows
Twitter Feed
InformationWeek Radio
Sponsored Live Streaming Video
Everything You've Been Told About Mobility Is Wrong
Attend this video symposium with Sean Wisdom, Global Director of Mobility Solutions, and learn about how you can harness powerful new products to mobilize your business potential.