The Cambridge Analytica scandal exposed what wasn’t really a secret, that Facebook is harvesting a lot of user data and that the data is shared with others. The privacy breach revealed that Facebook wasn’t doing enough to protect your privacy and that developers like Cambridge Analytica could take your data and your Facebook friends’ data and use it for whatever they wanted.
Since these revelations, Facebook has been trying to convince everyone that it can be trusted, that it will take measures to stop these practices, that your privacy matters to the company. But while it was performing this massive PR campaign, a different quiz app that had as many as 120 million users left their data exposed for others to see. Facebook was warned about it and needed many weeks to address and fix it properly.
RTFA originally published by the hacker who revealed the privacy breach.