Facebook snooped on users' Snapchat traffic in secret project, documents reveal | TechCrunch
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A secret program called "Project Ghostbusters" saw Facebook devise a way to intercept and decrypt the encrypted network traffic of Snapchat users to study their behavior.

The VPN app would send every information possible about the user to Facebook. One of the things it did was to be a man-in-the-middle that decrypted the internet traffic to and from Snapchat so that Meta could collect analytics on how people were using Snapchat.

Meta is such a piece of shit company.