>> "In contrast, fraudsters tend to create accounts and then go shop for merchandise."<p>Perhaps this is overreaching and the results have been skewed by various factors. According to one of the tables on that post, the analysis revealed that a purchase occurring between 3-10 minutes of account creation is 'quite suspicious'. I find it hard to believe this matches to reality.<p>I hope I don't come across as insulting, it's just that I know how easy it is to get false positives with anything involving statistics and machine learning.