Notes on E2EE and Client-Side Scanning

A look at the risks of scanning messages on devices in E2EE environments

Intro

These are my notes on end-to-end encryption (E2EE) and Bugs in Our Pockets, a paper on the risks of client-side scanning (CSS). The authors of this paper include some well-known experts and researchers in the cryptography space; one of them, for example, is Whitfield Diffie, who is one of the creators of the Diffie-Hellman key exchange protocol (al…