Security Alerts & News
by Tymoteusz A. Góral

History
#777 Inside the million-machine clickfraud botnet
Online advertising is a multi-billion dollar business mostly ran by Google, Yahoo or Bing via AdSense-like programs. The current generation of clickbots such as the Redirector.Paco Trojan have taken abuse to a whole new level, burning through companies’ advertising budget at an unprecedented pace.

The malware’s objective is to redirect all traffic performed when using a popular search engine (such as Google, Yahoo or Bing) and replace the results with others obtained from a Google custom search. The goal is to help cyber-criminals earn money from the AdSense program.

Google’s AdSense for Search program places contextually relevant ads on Custom Search Engine’s search results pages and shares a portion of its advertising revenue with AdSense partners.

To redirect the traffic the malware performs a few simple registry tweaks. It modifies the “AutoConfigURL” and “AutoConfigProxy” values from the “Internet Settings” registry key so that for every request that a user makes, a PAC (Proxy auto-config) file will be queried. This file tells the browser to redirect the traffic to a different address.
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#782 Symantec Antivirus products vulnerable to horrid overflow bug
#781 Groundbreaking gadget claims to fit in your ear and translate foreign languages in real-time
#780 Random number generator 'improved'
#779 Firefox tops Microsoft browser market share for first time
#778 Indian organizations targeted in Suckfly attacks
#777 Inside the million-machine clickfraud botnet
#776 Apple has fixed a bug that let hackers bypass iPhone lock screen
#775 Ukrainian hacker pleads guilty to insider trading in US
#774 Indefinite prison for suspect who won’t decrypt hard drives, feds say
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