About 3 weeks ago, I had some fraudulent charges on one of my Bank of America credit cards. The only new vendor I had charged stuff at with that card was Nile Corp (a vendor that sells jewelry store supplies). The Nile charge was a couple of weeks before the fraudulent ones. Today, I had 5 fraudulent charges attempted on my Amazon branded Chase card. Again, the only new vendor I had charged stuff at recently with that card was Nile Corp. and again it had been a couple of weeks since the Nile purchase.
Two different cards, both with fraudulent charges, and both used at the same merchant just a little before those fraudulent charges.
While this certainly isn't proof of anything, the coincidence of it all makes me believe that's where the security leak is at. So, if anyone here buys anything from them, you might want to watch that card closely for a few weeks.