Privacy Policy
Last updated: August 2026
Scope
This policy covers the Cykuza browser extension and this website (Cyberyen explorer and web wallet).
What we do not do
- We do not create user accounts
- We do not collect analytics or telemetry
- We do not sync vaults to the cloud
- We do not sell or share personal data
Browser extension
The extension is non-custodial. Encrypted vault ciphertext (Argon2id + AES-GCM) and local settings (network preference, optional custom Electrum endpoints, auto-lock, terms) stay in browser local storage on your device.
Plaintext keys exist only in memory after unlock. There are no content scripts or dApp provider injection in v1.
The wallet talks to Electrum servers you configure (or build-time defaults in official builds). Custom server URLs remain on your device. A self-host guide ships inside the extension.
This website
Blockchain lookups and the web wallet run in your browser session as a non-custodial hot wallet. We do not add third-party analytics on this product surface.
Contact
Questions or concerns: open an issue on cykuza-web or cykuza-extension.