1. https://github.com/marty90/icloud-private-relay-experiments
2. Alsabah, M., Goldberg, I.: Performance and security improvements for tor: a survey. ACM Comput. Surv. 49(2), 1–36 (2016)
3. Apple. About iCloud Private Relay, December 2021. https://support.apple.com/en-us/HT212614
4. Apple. iCloud Private Relay Overview, December 2021. http://www.apple.com/privacy/docs/iCloud_Private_Relay_Overview_Dec2021.PDF
5. Apple. Prepare Your Network or Web Server for iCloud Private Relay. https://developer.apple.com/support/prepare-your-network-for-icloud-private-relay/, December 2021