Sifero Cloud is a cloud storage service designed to provide zero-knowledge, end-to-end encrypted file storage. The platform emphasizes privacy by ensuring that files, filenames, and notes are encrypted locally in the user's browser before upload, so that only the user can access the contents. The encryption process uses Argon2id to derive an encryption key from the user's password, which never leaves the device, and AES-256-GCM to encrypt each file with a unique random initialization vector. As a result, the service only stores ciphertext—random, meaningless bytes that are inaccessible without the user's password.
A key aspect of Sifero Cloud is its commitment to user privacy and data security. The service operates without requiring an email address for registration and explicitly states that no tracking is performed. This approach is intended to minimize the amount of personal information collected and reduce potential privacy risks. The encryption module used by Sifero Cloud is open-source, allowing anyone to inspect its code for transparency and security verification.
Sifero Cloud is accessible through a web interface, with all encryption operations handled in the browser. The platform offers a free tier, as indicated by the option to start using the service without cost. The tool is positioned as a solution for users who prioritize privacy and security in their cloud storage, ensuring that even the service provider cannot access stored data.
By focusing on zero-knowledge encryption and user-controlled security, Sifero Cloud addresses the needs of individuals seeking confidential and private file storage online. Its open-source cryptography module further supports its transparency and trustworthiness for privacy-focused users.
Sifero Cloud is a File storage & sync product. Users need secure, private cloud storage where only they can access their files, with no risk of provider access. Sifero Cloud is a consumer product aimed at privacy-conscious individuals and businesses. A free plan is available. It runs on the web.
Behind Sifero Cloud is Sifero, and the product first shipped in 2026. The project is developed in the open on GitHub with 1 commits in the last 90 days. Across PulseGate's embedding index, Sifero Cloud has few near neighbours, marking it as relatively distinct. Among its 5 catalogued features are zero-knowledge encryption, end-to-end encryption, and no email required.
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Sifero Cloud discovered by the PulseGate indexer
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