In 2008 researchers from the University of California at Berkeley and San Diego posed as spammers, infiltrated a botnet and measured its success rate.

2008年加州大学伯克利分校和圣迭戈分校的研究者假装成垃圾邮件制造者，潜伏进一个僵尸网络病并测量了它成功的比例。