Facebook Doesn't Know What It Does With Your Data, Or Where It Goes

The document was written last year by Facebook privacy engineers on the Ad and Business Product team, whose mission is "to make meaningful connections between people and businesses," and which "sits at the center of our monetization strategy and is the engine that powers Facebook's growth," according to a recent job listing that describes the team. This is the team that is tasked with building and maintaining Facebook's sprawling ads system, the core of the company's business. And in this document, the team is both sounding an alarm, and making a call to change how Facebook deals with users' data to prevent the company from running into trouble with regulators in Europe, the US, India, and other countries that are pushing for more stringent privacy constraints on social media companies. "We do not have an adequate level of control and explainability over how our systems use data, and thus we can't confidently make controlled policy changes or external commitments such as 'we will not use X data for Y purpose.' And yet, this is exactly what regulators expect us to do, increasing our risk of mistakes and misrepresentation," the document read. In other words, even Facebook's own engineers admit that they are struggling to make sense and keep track of where user data goes once it's inside Facebook's systems, according to the document. This problem inside Facebook is known as "data lineage."