Thanks to unsealed court filings and the Congressional testimony of several witnesses, we now have a stunning piece of the puzzle on the actual table that is almost too stupid to believe: Meta used BitTorrent to download tens of terabytes of pirated books from pirate sites like LibGen and Anna’s Archive. And if that wasn’t stupid enough, Meta’s torrenting was approved by Mark Zuckerberg himself.
An Exception to the Exception:  Will Meta’s Pirated Book Training Pipeline and the Case for Prosecution Signal the End of Fair Use for AI – Music Technology Policy