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Why our servers only ever see ciphertext

2026-05-28 · Blink Engineering

Blink stores only encrypted payloads and encrypts media on your device before uploading it, so a breach reveals nothing readable.

At Blink, security isn't a setting you switch on — it's the architecture. Messages and media are encrypted on your device before they're sent, our servers store only ciphertext, and the keys never leave your control. We publish how it works because trust should be verifiable, not assumed.

We're also candid about what isn't shipped yet. Where a capability is on our roadmap — like fully end-to-end encrypted calls or additional data-residency regions — we say so plainly. Private by design. Fast by default.