Mysk🇨🇦🇩🇪Five years ago, during our research on link previews, we discovered that Meta servers download every shared file in Facebook Messenger and Instagram DM in full—even if it’s gigabytes in size. Now, looking back, it would be interesting to know if Meta used these files to train their AI models. Meta insisted it wasn’t a bug. When we published videos demonstrating the issue, they asked YouTube to take them down. YouTube removed one video and gave us a strike.
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