Trojan uses Hotmail and Yahoo as spam hosts

Jul 9, 2007 3:22 PM
Filed under Security

Scammers bypassing authentication systems.

Security firm BitDefender has warned of a new email threat using Hotmail and Yahoo Mail accounts to send spam. 

Trojan.Spammer.HotLan.A uses automatically generated email accounts, suggesting that spammers have found a way to bypass so-called Captcha systems.

Captcha works by preventing new accounts being created until the creator correctly identifies the letters depicted in an image.

Every active copy of the Trojan accesses an account, and pulls encrypted spam emails from a website. It then decrypts the emails and sends them to valid addresses taken from yet another website.

"There are only about 500 or so new accounts being created every hour," said Viorel Canja, head of BitDefender's antivirus lab.

"But we have seen at least 15,000 Hotmail accounts being used so far. It is hard to estimate how many spam emails have already been sent."

The spam currently being distributed attempts to lure users to a site advertising pharmacy products. Common spam techniques are used in the email body, such as random word generation and a random email subject.



 
Follow us on Facebook and Twitter
 

Copyright ©v3.co.uk

Trojan uses Hotmail and Yahoo as spam hosts
 
 
 
 
 
Top Stories
Vocus to create national telco with Amcom buyout
Combined company will have more than 20 data centres.
 
Commonwealth Games tech provider liquidated, owing $174k
Year of stresses prove too much for AchieveIT.
 
Telstra confirms Pacnet acquisition talks
Potential purchase of significant data centre and telecoms provider.
 
Sign up to receive CRN email bulletins
   FOLLOW US...
Polls
Who had more wins in 2014?

Latest Comments
CRN Magazine

Issue: 334 | December 2014

CRN Magazine looks in-depth at the emerging issues and developments for the channel, and provides insight, analysis and strategic information to help resellers better run their businesses.