https://www.cnet.com/news/cambridge-analytica-researcher-fires-back-at-facebook-on-60-minutes/

Aleksandr Kogan, the app developer at the center of Facebook's data privacy scandal, says he isn't sure whether he ever read the social network's developer policy, which prohibited apps like his from selling or licensing Facebook data to marketing firms.

Kogan tells 60 Minutes in a report to be aired Sunday that he harvested the data of tens of millions of Facebook users, he didn't think obtaining it for a political consulting firm like his Cambridge Analytica was against the rules.