On Jan 4th, we saw a dump of 2 Million cards onto the black market - one of the largest single day drops we've seen in a while. While we can't definitively say what the source of the breach was, the percentage of Extremely High Value cards is significantly higher than we see on average. These are cards like the Amex Centurion card - an invite-only card that comes with a $7500 setup fee, and $2500 annual fee. While it is hard to determine from a single black market, this would indicate these could come from a high end source, such as Neiman Marcus.
For more information, visit:http://www.easysol.net/newweb/Products/detect_monitoring_service