Found a reference, in this WSJ editorial: http://online.wsj.com/article/SB1000142412788732382300457859...

and Daily Caller piece: http://dailycaller.com/2013/06/26/consumer-financial-protect...

To be fair the CFPB claims the data is anonymized, even though there are account level rows in the datasets they are pulling in from the credit card companies they regulate.