The role of botnets in click fraud is on the upswing, according to a report by Click Forensics. The percentage of click fraud traffic driven by botnets has increased to more than 27 percent of all click fraud traffic, surpassing its reported all-time high of 25 percent, set the previous quarter.
Click fraud may have dipped slightly of late, but botnets continue to
be a driving force behind the activity.
According to Click Forensics, traffic from botnets accounted for 27.6
percent of all click fraud traffic in the third quarter of 2008. The company
found that the amount of click fraud traffic tied to botnets has been
increasing steadily in 2008, and jumped 8 percent in the first
quarter of 2008 alone.
The bane of companies like Google
click fraud is an illegal
practice that occurs when individuals click on Web site click-through
advertisements such as banner ads to increase the payable number of
click-throughs to the advertiser.
When botnets are providing the clicking, the problem becomes especially
tricky to address, given the elusive nature of botnets themselves.
"Botnets have become in many ways a service industry," said Joe
Dallatore, senior manager of the Security Intelligence Engineering group at
"There's a group of people out there who built these
[botnets] and have them available, and they basically go out and hire them. It's
basically labor for hire to do bad things."
The Warezov botnet is back in the spam game. Click here to read more.
According to Click Forensics, the click fraud rate dropped from 16.2
percent in the second quarter to 16 percent in the third. The average third-quarter
click fraud rate of pay-per-click advertisements on search engine content
networks such as Google AdSense and Yahoo Publisher Network was 27.1 percent.
That's down from the 27.6 percent rate reported for the second quarter and the
28.1 percent average click fraud rate reported for the third quarter of 2007.
"For the past two quarters the industry average
click fraud rates [seem] to be hovering around the 16 percent level," Tom
Cuthbert, president of Click Forensics, said in a statement. "Gains are
being made by advertisers taking more action to proactively filter out fraud
before it affects online campaigns. However, the growth in click fraud traffic
from botnets continues to rise and it should be one of the top areas
advertisers and the industry should monitor closely."