Top 30 Cloud Storage Platforms with Multi‑Factor Authentication and Zero‑Knowledge Encryption

Curated list of the most secure cloud storage services that combine strong multi‑factor authentication (MFA) with client‑side (zero‑knowledge) encryption to keep your data private.

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End‑to‑end encrypted storage with mandatory MFA, file versioning, and granular sharing controls.

Zero‑knowledge encryption, HIPAA‑compliant, and MFA options (TOTP, U2F) for enterprise‑grade secure file sharing.

Optional client‑side encrypted folder, MFA‑protected account, and built‑in rewind for file recovery.

Zero‑knowledge “no knowledge” architecture, MFA (TOTP), and secure backup/ sync across devices.

#6 MEGA

Client‑side encrypted storage (256‑bit AES), MFA via authenticator apps, and generous free tier.

Zero‑knowledge encrypted drive from the makers of ProtonMail, with MFA (TOTP, WebAuthn) and Swiss privacy laws.

Open‑source zero‑knowledge cloud storage, MFA support, and privacy‑first design.

#9 Cryptee

Secure notes, documents, and file storage with client‑side encryption and MFA (TOTP).

#10 Icedrive

Zero‑knowledge encrypted cloud drive with MFA (TOTP, WebAuthn) and a modern desktop client.

Zero‑knowledge encrypted locker, MFA via authenticator apps, and drag‑and‑drop desktop sync.

#12 Storj DCS

Decentralized object storage with client‑side encryption and MFA (TOTP, U2F) for access keys.

#13 Sia

Decentralized cloud storage network, files encrypted client‑side, MFA for wallet access.

Self‑hosted solution offering zero‑knowledge encryption and MFA (TOTP, U2F) for user logins.

Self‑hosted storage with optional end‑to‑end encryption and MFA integration.

Zero‑knowledge encrypted vault with MFA (TOTP, SMS) and secure file sharing.

Adds zero‑knowledge encryption and MFA to existing cloud accounts (e.g., Dropbox, Google Drive).

Standard cloud storage with optional zero‑knowledge encryption layer and MFA.

Enterprise file sync with optional zero‑knowledge encryption and MFA (TOTP, U2F).

Personal cloud with optional client‑side encryption and MFA for account protection.

Team‑focused storage with end‑to‑end encryption and MFA (TOTP, hardware keys).

Open‑source vault encryption that can be paired with any cloud provider; MFA protects the vault password manager.

Create encrypted containers stored in any cloud; MFA secures the host account.

Web‑based file manager with client‑side encryption and MFA for login.

Peer‑to‑peer sync with optional end‑to‑end encryption and MFA for the management console.

Offers a zero‑knowledge vault add‑on and MFA for account access.

Provides an optional encrypted folder with MFA (SMS, authenticator).

Enterprise tier adds enforced MFA and stronger zero‑knowledge guarantees.

When paired with tools like Boxcryptor, provides zero‑knowledge encryption plus Google’s native MFA.

Personal Vault adds client‑side encryption and MFA; suitable for highly sensitive files.

When used with third‑party encryption apps, offers zero‑knowledge storage plus Apple’s MFA.

Vault feature adds client‑side encryption; MFA (TOTP, SMS) protects the account.

Provides optional encrypted uploads and mandatory MFA for premium accounts.