It was an internal database (from Capital One credit cards), they weren't allowed to use that data for analysis. This wasn't publicly accessible information. S

It was an internal database (from Capital One credit cards), they weren't allowed to use that data for analysis. This wasn't publicly accessible information. See article: https://www.bloomberg.com/opinion/articles/2015-01-23/capital-one-fraud-researchers-may-also-have-done-some-fraud https://www.bloomberg.com/opinion/articles/2015-01-23/capita...