...
Anyway, Occam's razor is against this possibility. Not to mention that publishing of such sensitive information would be incredibly more profitable in the long term.
This material has existed, for some time, as a mass of papers and gigabytes of computer memory, in the offices of people who are struggling to make payments on their lavish lifestyles.
You work in such a place. You have this material. You need money.
Thankfully somebody got to one of employees with some kind of appeal to ethics or something.