James Hong relates an interesting description about dealing with scammers at scale:
The level of sophistication of some of these outfits is astounding. It is not a few amateurs here and there doing it as individuals, they are organized outfits that operate like call centers. We found that there were people whose job it is specifically to get IM addresses out of people, at which point the target is passed along (like a call center escalation) to someone who speaks better english to work on chatting the person up and eventually extracting money. In a nutshell, they train specialists on each step of the scam! Because these are actual human beings doing it, they can pretty much get around automated detection systems, and they usually do the dirty work once they are off our system and on IM (where we can’t model them anymore).
