In 2016, Facebook launched a secret project designed to intercept and decrypt the network traffic between people using Snapchat’s app and its servers. The goal was to understand users’ behavior and help Facebook compete with Snapchat, according to newly unsealed court documents. Facebook called this “Project Ghostbusters,” in a clear reference to Snapchat’s ghost-like logo. On Tuesday, a federal court in California released new documents discovered as part of the class action lawsuit between con...