The WeTransfer alternative for files that are actually confidential
WeTransfer is great for sending a video or a design mockup. But it manages the encryption keys, so the service can technically access what you upload. For contracts, medical records, or financial documents, you want a service that can't read your files. That's what KyberCrypt is built for.
The difference is the encryption model
WeTransfer encrypts files in transit and at rest, which protects against eavesdroppers and casual breaches — fine for a promo clip. But because it holds the keys, the provider can access your files, and they sit on its servers for days. KyberCrypt instead seals each file to the recipient's own keys, stores only ciphertext, and deletes it the instant it's downloaded.
| WeTransfer | KyberCrypt | |
|---|---|---|
| Encryption | In transit + at rest, provider-managed keys | Sealed to the recipient; hybrid post-quantum (ML-KEM-768 + X25519) |
| Can the provider read your files | Technically, yes | At rest, only ciphertext; for client-side intake & the native app, ciphertext only |
| Burn after download | No — files linger for days | Yes — deleted on download |
| Post-quantum encryption | No | Yes |
| Collect files from others | Limited | Secure request links, with a client-side-encrypted option |
| Free tier | Yes | Yes |
When to use which
Sending a non-sensitive file to a friend? WeTransfer is perfectly fine. Sending a signed contract, a patient record, or a client's tax documents? Use a tool where the encryption is sealed to the recipient and the file disappears after download. KyberCrypt keeps the one-link simplicity you're used to and adds the security those files deserve.
Post-quantum encrypted file transfer. Free plan, no card required.