Nuclear Pack exploit kit introduces anti-honeyclient crawling feature

For years, the security community has been developing efficient ways to evaluate the maliciousness of as many web sites as possible, by crawling them for malicious content in an automated fashion. Thanks to the  rise of botnets as an exploitation platform, today’s cybercriminals are largely relying on compromised legitimate infrastructure as a delivery vehicle for their malicious content, compared to using purely malicious sites as an infection/propagation vector.