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It seems like everyone that tries to deploy end-to-end encrypted cloud
storage seems to mess it up, often in new and creative ways. Our special
guests Matilda Backendal, Jonas Hofmann, and Kien Tuong Truong give us a tour through the breakage and discuss a new formal model of how to actually build a secure E2EE storage system.

Watch on YouTube: https://youtu.be/sizLiK_byCw

Transcript: https://securitycryptographywhatever.com/2025/05/19/e2ee-storage/

Links:

- https://brokencloudstorage.info

- https://eprint.iacr.org/2024/1616.pdf

- https://www.sync.com

- https://www.pcloud.com

- https://icedrive.net

- https://seafile.com

- https://tresorit.com

- https://eprint.iacr.org/2024/989.pdf

"Security Cryptography Whatever" is hosted by Deirdre Connolly (@durumcrustulum), Thomas Ptacek (@tqbf), and David Adrian (@dadrian)