The latest dump of stolen cards “looks like it was massive – basically every BIN that you search for, every city is included, every state is included” The emergence of underground marketplaces, such as the Rescator site where the most recent card dump occurred, has allowed card issuers and fraud analysts to spot breaches much more quickly by tracing back stolen card numbers being offered for sale. But this “spot a flood of card data onto cybercrime sites, then react” model is far from perfect.”]
Source: https://www.cuinfosecurity.com/blogs/banks-reacting-faster-to-card-breaches-p-1736