Investigating Traffic Analysis Attacks on Apple iCloud Private Relay
Zohaib Ali, Jade Sheffey, Amir Houmansadr · 2023
The iCloud Private Relay (PR) is a new feature introduced by Apple in June 2021 that aims to enhance online privacy by protecting a subset of web traffic from both local eavesdroppers and websites that use IP-based tracking. The service is integrated into Apple’s latest operating systems and uses a two-hop architecture where a user’s web traffic is relayed through two proxies run by disjoint entities.