Essays on zero-knowledge document systems, document custody, and why "encrypted" is not the same as "safe".https://cellulardefense.net/https://cellulardefense.net/blog/the-custody-problem/https://cellulardefense.net/blog/the-custody-problem/Lavabit's users weren't betrayed by broken cryptography. They were betrayed by where the keys lived.Wed, 28 Oct 2026 00:00:00 GMT