Researchers who found a vulnerability in the protocols used in the Tor anonymous Internet service used it to survey the traffic on the network. They found that "…while the content of Tor hidden services is rather varied, the most popular hidden services are related to botnets."
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The Redmond giant says it has successfully disrupted a harmful network of botnets.
Whereas the overall click fraud rate isn't increasing, it's not decreasing either, remaining flat for the first two quarters of 2008, according to data gathered from the Click Fraud Network, consisting of more than 4,000 online advertisers and agencies. Click Forensics report for the second quarter of 2008, indicates that botnets continue being used for click fraud, the preferred and more efficient approach compared to hiring human clickers on a revenue sharing basis.
What's the current state of click fraud, and what tools and tactics do the people behind click fraud campaigns have in their arsenal? A recently analyzed affiliate based network for using botnets to commit click fraud provides a timely assessment of the situation, and provides evidential facts on the internal success rate of such a consolidated botnet.
This is the intention of Paul Barford, a computer scientist at the University of Wisconsin-Madison. He wants to build a new line of defense against malicious traffic which has become today a billion-dollar 'shadow industry.' As one of 'the most menacing aspects of botnets is that they can go largely undetected' by a PC owner, he developed a new computer security technique for detecting network intrusions. His system has a 99.9% detection rate of malicious signatures, roughly equivalent to some of the best commercial systems. But it has zero false positives when commercial systems have high numbers. This new system could soon be available commercially.
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