ABOUT
We believe secrets should stay secret.
CIPH4 is building the infrastructure for secure, ephemeral secret sharing — 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 with one person, one time, 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
Enterprise-grade, end-to-end encrypted secret sharing with self-destructing one-time links, audit trails, and zero-knowledge architecture.
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
By security engineers and enterprise software veterans. Our team brings combined experience building security products at scale, defending regulated infrastructure, and pressure-testing systems for large enterprises.
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.