New feature
Secure Locker
An encrypted vault for files — even the filenames are hidden.
Private by default. Yours by design.
Blink is a secure messenger built on end-to-end encryption. Your servers only ever store ciphertext — your keys never leave your device.
Built on proven cryptography
Security you can actually see at work.
Blink's protections aren't buried in settings — they're built into every message, every file, and every device. Here's what's working for you the moment you sign in.
What's new in Blink
Feature enhancement
Transaction messages
Receipts and records that never expire, sealed with the same E2EE.
New feature
Reverse-PIN duress wipe
A second PIN that quietly erases everything under coercion.
Roadmap
Disguise apps
Open Blink behind a weather, game, or stocks icon. Coming soon.
Roadmap
Fully E2EE voice & video
Calls run over secure media servers today; end-to-end-encrypted calls are coming.
Roadmap
Switzerland + GDPR residency
Planned. Today Blink runs in the US and India.
Private by default
Private by default — not a setting.
Every message and file is end-to-end encrypted before it leaves your device. Servers store only ciphertext, and your keys stay with you.
Every message and file is sealed with AES-256-GCM before it leaves your device. Servers only ever see ciphertext.
How encryption works
Privacy reaches every corner of the conversation — not just the message body.
Explore secure messaging
AES-256-GCM
Authenticated encryption on every message and file, with ECDH P-256 key agreement
AES-256-GCM
Authenticated encryption on every message and file, with ECDH P-256 key agreement
Total control of your devices
Total control of every device that holds your data.
See every device, lock down the screen, and revoke a lost one for good — with a keyboard built so nothing can watch you type.
A push-triggered, 4-step factory-clean wipe revokes a lost device's keys for good.
Learn about device control
Blink's custom keyboard fully disables the system keyboard on iOS and Android.
Learn about the keyboard
Plus an app-switcher guard and proximity blackout for sensitive moments.
Learn about screen protection
‘Sources stay protected — end-to-end encryption and a duress wipe mean a seized device gives nothing away.’
Built for when it matters
Built for the moments when it really matters.
Duress defense, the Secure Locker, and immortal transaction records are designed for high-stakes work — when ordinary privacy isn't enough.
The reverse-PIN duress wipe is built for the moments you're under pressure.
Learn about duress defense
Transaction messages stay immortal — encrypted, verifiable, retained.
Learn about transaction messages
4-step
Push-triggered factory-clean wipe that revokes a lost device's keys for good
4-step
Push-triggered factory-clean wipe that revokes a lost device's keys for good
Secure Spaces
Secure Spaces, with real roles and real isolation.
Multi-tenant Spaces with proper RBAC, space lock and guarding, and the same encryption guarantees on web, iOS, and Android.
‘Privileged files live in the Secure Locker — encrypted, off the device, with the keys in our hands alone.’
Built for the people who can't afford a leak.
Illustrative personas showing how Blink's architecture holds up under pressure.
How a newsroom protects its sources with Blink.
A legal team keeps privileged files off the device.
Field operations rely on instant remote wipe.
A founder under NDA keeps verifiable, encrypted records.
Privacy that's engineered, not promised.
0-bit
AES-256-GCM authenticated encryption on every message and file
0 platforms
Web, iOS, and Android — one protocol, one set of guarantees
0-day
Epoch forward secrecy limits what any single key can ever unlock
The cryptography behind every Blink message.
AES-256-GCM
authenticated encryption on every message and file
ECDH P-256
key agreement with HKDF-SHA256 key derivation
Ciphertext-only
servers in ScyllaDB never see your plaintext
4-step
push-triggered remote wipe across web, iOS, and Android
Don't just take our word for it.
Your messages are sealed before they ever reach our servers.