gfxgfx
 
Please login or register.

Login with username, password and session length
 
gfx gfx
gfx
74991 Posts in 13106 Topics by 2620 Members - Latest Member: dak4482 December 08, 2016, 08:05:27 PM
*
gfx*gfx
gfx
WinMX World :: Forum  |  Discussion  |  WinMx World News  |  Researchers help shut down spam botnet that enslaved 4,000 Linux machines
gfx
gfxgfx
 

Author Topic: Researchers help shut down spam botnet that enslaved 4,000 Linux machines  (Read 155 times)

0 Members and 1 Guest are viewing this topic.

Known as Mumblehard, the botnet was the product of highly skilled developers. It used a custom "packer" to conceal the Perl-based source code that made it run, a backdoor that gave attackers persistent access, and a mail daemon that was able to send large volumes of spam. Command servers that coordinated the compromised machines' operations could also send messages to Spamhaus requesting the delisting of any Mumblehard-based IP addresses that sneaked into the real-time composite blocking list, or CBL, maintained by the anti-spam service.

"There was a script automatically monitoring the CBL for the IP addresses of all the spam-bots," researchers from security firm Eset wrote in a blog post published Thursday. "If one was found to be blacklisted, this script requested the delisting of the IP address. Such requests are protected with a CAPTCHA to avoid automation, but OCR (or an external service if OCR didn’t work) was used to break the protection."

http://arstechnica.com/security/2016/04/researchers-help-shut-down-spam-botnet-that-enslaved-4000-linux-machines/

WinMX World :: Forum  |  Discussion  |  WinMx World News  |  Researchers help shut down spam botnet that enslaved 4,000 Linux machines
 

gfxgfx
gfx
©2005-2016 WinMXWorld.com. All rights reserved.
SMF 2.0.12 | SMF © 2016, Simple Machines
Page created in 0.039 seconds with 22 queries.
Helios Multi © Bloc
gfx
Powered by MySQL Powered by PHP Valid XHTML 1.0! Valid CSS!