The Workings of WhatsApp’s Backups (and Why You Should Enable End-to-End Encrypted Backups)

About This Blog Post This blog post is a technical report of a presentation that I presented on June 10, 2022 for the second task of my Mobile Security course. I decided to investigate how WhatsApp backs up messages to the cloud with the “end-to-end encrypted backups” option toggled on and off. TL;DR at the bottom. Introduction & Motivation WhatsApp [1][2] is a cross-platform instant messaging app used by “more than 2 billion users in 180 countries” [3][5].