The sister-in-law of a close friend of mine is a banker in Europe. Apparently, she inadvertently got mixed up with the Russian mafia, and now regularly does financial work for them (alongside her normal corporate work). Her husband (my friend's brother) is a higher up in Morocco, and a couple years ago was a liason for Zuckerberg when he was vacationing there. Long story short, the sister-in-law banker ended up dining with Zuckerberg one night. She told my friend that he was the biggest psychopath she'd ever met. Says a lot if one of your clients is the mafia.