by BeauHD on (#63CGZ)
An anonymous reader quotes a report from The Intercept: In March, two veteran Facebook engineers found themselves grilled about the company's sprawling data collection operations in a hearing for the ongoing lawsuit over the mishandling of private user information stemming from the Cambridge Analytica scandal. The hearing, a transcript of which was recently unsealed (PDF), was aimed at resolving one crucial issue: What information, precisely, does Facebook store about us, and where is it? The engineers' response will come as little relief to those concerned with the company's stewardship of billions of digitized lives: They don't know. The admissions occurred during a hearing with special master Daniel Garrie, a court-appointed subject-matter expert tasked with resolving a disclosure impasse. Garrie was attempting to get the company to provide an exhaustive, definitive accounting of where personal data might be stored in some 55 Facebook subsystems. Both veteran Facebook engineers, with according to LinkedIn two decades of experience between them, struggled to even venture what may be stored in Facebook's subsystems. "I'm just trying to understand at the most basic level from this list what we're looking at," Garrie asked. "I don't believe there's a single person that exists who could answer that question," replied Eugene Zarashaw, a Facebook engineering director. "It would take a significant team effort to even be able to answer that question." When asked about how Facebook might track down every bit of data associated with a given user account, Zarashaw was stumped again: "It would take multiple teams on the ad side to track down exactly the -- where the data flows. I would be surprised if there's even a single person that can answer that narrow question conclusively." [...] Facebook's stonewalling has been revealing on its own, providing variations on the same theme: It has amassed so much data on so many billions of people and organized it so confusingly that full transparency is impossible on a technical level. In the March 2022 hearing, Zarashaw and Steven Elia, a software engineering manager, described Facebook as a data-processing apparatus so complex that it defies understanding from within. The hearing amounted to two high-ranking engineers at one of the most powerful and resource-flush engineering outfits in history describing their product as an unknowable machine. The special master at times seemed in disbelief, as when he questioned the engineers over whether any documentation existed for a particular Facebook subsystem. "Someone must have a diagram that says this is where this data is stored," he said, according to the transcript. Zarashaw responded: "We have a somewhat strange engineering culture compared to most where we don't generate a lot of artifacts during the engineering process. Effectively the code is its own design document often." He quickly added, "For what it's worth, this is terrifying to me when I first joined as well."Read more of this story at Slashdot.