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Jan
9
Spam Emails Link To QR Codes
Posted by Elad Sharf on 09 January 2012 11:18 PM

 

It was just a matter of time, and now it's happening. The Websense® ThreatSeeker® Network has started spotting spam messages that lead to URLs that use embedded QR codes. This is a clear movement and evolution of traditional spammers towards targeting mobile technology.

 

The spam email messages look like traditional pharmaceutical spam emails (image 1) and contain a link to the Web site 2tag.nl. This is a legitimate Web service that allows users to create QR codes for URLs. Once the 2tag.nl URL from the mail message is loaded in the browser, a QR code is displayed, along with the full URL that the QR code resolves to on the right (image 2). When the QR code is read by a QR reader, it automatically loads the spam URL(or asks before loading, depending on which flavor of QR reader you have installed) (images 3 and 4).

 

Websense customers have been protected against this attack with ACE, our Advanced Classification Engine.

 

Image 1 - An example spam email message:

 

Image 2 - When the URL is loaded in the browser, a QR code appears:

 

 

Image 3 -  Scanning the QR code with a QR reader loads the pharmaceutical spam URL in the browser:

 

 

Image 4 - The loaded URL offers pharmaceutical drugs:

 


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