ABOUT
We believe secrets should stay secret.
CIPH4 builds the secure way to share something that shouldn't stick around — because some things should only be seen once.
THE STORY
How CIPH4 started
Offer letters get emailed in plain text. Contracts get dropped into shared drives. Financial statements live forever in Slack threads. Every day, confidential documents sit exposed in channels, inboxes, and chat logs that never expire. Enterprises have no good way to share sensitive information — and that's the gap CIPH4 was built to close.
We set out to build something better — a secure link for the digital age. A way to share a secret that can self-destruct after a single view, with end-to-end encryption that means even we can't read what you share. Once viewed, the secret is destroyed. No traces. No logs of the plaintext. No “forwarded to 47 people” chains. The zero-knowledge architecture page covers the technical posture.
CIPH4's secure link-sharing platform is built for teams that handle sensitive data — legal, HR, finance, security, and compliance — and believe the best way to protect a secret is to make sure it doesn't persist.
THE PRODUCT
What we do
End-to-end encrypted secret sharing with self-destructing links, audit logs, and a zero-knowledge architecture — built for enterprise.
One-time links
Secrets are destroyed after a single view. No forwarding, no persistence.
Client-side encryption
End-to-end encryption happens in your browser for shared secrets. We never see your plaintext content.
Enterprise controls
SSO, audit logs, team management, and configurable compound expiry: time, view count, and download count — first to hit destroys the secret.
API-first
Full REST API for integrating secure links into your onboarding, ticketing, and internal tools.
THE TEAM
Founded in 2023
Built by engineers who have spent years shipping security products and defending regulated infrastructure. We built CIPH4 because we kept watching the same failure: confidential files shared over channels that never forget.
We built CIPH4 because we were tired of seeing offer letters, credentials, and contracts shared insecurely — and we knew there had to be a better way.
Headquartered in San Francisco, California. CIPH4 Inc. builds secure infrastructure for teams around the world.
Ready to protect your secrets?
Start free with 20 links a month, or contact sales about enterprise deployments — SSO, SCIM, compliance suite, signed deletion receipts.