Zero-knowledge, end-to-end encrypted cloud storage means only you can decrypt your files — not the storage provider, not law enforcement with a subpoena, not hackers who breach the servers. This is the highest standard of cloud privacy available.
Tresorit consistently tops independent security assessments for its implementation and Swiss data handling. Proton Drive has rapidly improved with the team's cryptography pedigree from ProtonMail. MEGA offers the most generous free encrypted tier (20 GB). For self-hosters, Nextcloud with encryption plugins gives full data sovereignty.
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