FEATURES

Data privacy via quantum-resistant E2EE	Your file contents and filenames are encrypted in your browser before they are uploaded, using the AES-GCM 256-bit cipher. It combines encryption with authentication to detect tampering, and AES-256 is considered resistant to known quantum attacks. Your file contents and filenames are stored encrypted, and NETHERWALL cannot read your files. Privacy is built into how the service works.
Lean code, smaller attack surface	The browser app runs without third-party libraries. A straightforward build process avoids unnecessary dependency chains, reducing exposure to supply chain attacks and keeping the attack surface small.
Minimal customer information	We keep only the account and operational information needed to provide the service. Your private files remain encrypted, and we do not build advertising profiles from your activity.
Trust and verifiability	We aim to provide the browser app as a single JavaScript file that you can give to an LLM for review and analysis. Anyone can review how encryption works and verify that uploaded data cannot be decrypted without your password or keys and that your password and unencrypted keys never leave your browser.
No tracking code or analytics	No third-party cookies, tracking scripts or analytics collection. Your activity is not collected for advertising or passed to third-party analytics services.
Optional local tools	An optional native client lets you access your encrypted data, back it up or sync it locally, and use your local copy completely offline. It also supports additional ways to access your data, such as local WebDAV or S3-compatible interfaces. You remain in control of your encryption passwords and keys.