Foxcolab
Foxcolab
Zero-Knowledge Security

Your privacy is not a feature.
It's the foundation.

Foxcolab was built from the ground up with a single guarantee — that no one, including us, can read your conversations or track your identity.

We can't read your messages. And neither can anyone else.

Our Zero-Knowledge architecture means Foxcolab's servers only ever see encrypted ciphertext. We have no keys, no backdoors, and no ability to comply with data requests — because there is simply nothing to hand over.

Six Layers of Protection

Security at Foxcolab isn't one thing — it's a carefully layered system that protects you at every level.

End-to-End Encryption

Every message, call, and file is encrypted on your device before it leaves. Only the intended recipient can decrypt it — not Foxcolab, not your ISP, not any government.

Zero-Knowledge Architecture

Foxcolab's servers never see your plaintext data. We operate on a Zero-Knowledge principle — we literally cannot read your messages even if we wanted to.

F-Number: Your Hidden Identity

Foxcolab uses your real mobile number only at login and to help you find friends — it is never shown anywhere in the app. Every chat, call, group, team, and music session identifies you only by your assigned F-Number.

No Data Retention

Messages are not stored on our servers after delivery. Once your conversation is delivered, it exists only on the devices involved — nowhere else.

Zero Tracking, Zero Ads

We don't run surveillance capitalism. No behavioral tracking, no ad profiles, no selling your data to third parties — period.

Perfect Forward Secrecy

New encryption keys are generated for every session. Even if a key is ever compromised, past conversations remain completely secure and undecipherable.

Whitepaper Summary

Cryptographic Stack

Foxcolab uses industry-standard, battle-tested cryptographic primitives — the same protocols trusted by security researchers globally. We don't invent our own cryptography; we implement it correctly.

  • No proprietary encryption schemes
  • Open protocol specifications
  • Regular third-party security audits
  • Vulnerability disclosure program
Message Encryption
Signal Protocol / AES-256-GCM
Key Exchange
X25519 Elliptic Curve Diffie-Hellman
Key Derivation
HKDF with SHA-256
Identity Verification
Ed25519 Signatures
Transport Layer
TLS 1.3 with Certificate Pinning
Media Encryption
SRTP / AES-128

How We Compare

Most apps claim privacy. Foxcolab is built around it.

Security FeatureFoxcolabTypical Messaging App
End-to-End Encryption (all messages)
Zero-Knowledge Server Architecture
Real phone number never visible to contacts
No behavioral ad tracking
No message retention on servers
Perfect Forward Secrecy
F-Number in-app identity (real number hidden)
Open source encryption protocols

Step 1 — Login

📱

Your real mobile number

Used only for login & friend discovery

Step 2 — Your F-Number

F#

F-491-BX3

Your permanent in-app identity

What your contacts see

A
In every chatF-491-BX3
B
In every callF-491-BX3

Real phone number — never shown, ever

Anonymous Identity

The F-Number System

Foxcolab asks for your real mobile number only once — at registration and to help you discover friends who are already on Foxcolab. That is where your real number's role ends.

The moment you're inside the app, Foxcolab assigns you a unique F-Number — your permanent in-app identity. Every message you send, every call you make, every group you join, every team you collaborate in, and every music session you enjoy is tied to your F-Number alone.

Your real phone number is never visible to other users, never shown in chats, calls, or profiles — and never used for anything beyond the initial lookup.

  • Real number used only for login & friend discovery
  • F-Number shown everywhere in-app instead
  • Contacts never see your real phone number
  • Instant F-Number revocation if needed
Threat Model

What We Protect You From

Mass Surveillance

Our E2E encryption ensures bulk interception programs see only encrypted noise.

Data Breaches

We store no plaintext. A breach of our servers exposes nothing of value.

Corporate Tracking

No advertising SDK, no analytics broker, no behavioral profiling — ever.

Legal Overreach

We cannot comply with data requests for message content — there is nothing to give.

“Foxcolab is the first platform I've used where I genuinely trust that my organisation's confidential communications are mathematically protected — not just promised.”
R

Rajan Mehta

CISO, Financial Services

Transparency is our policy.

Detailed information about how we handle your data, our legal obligations, and your rights as a Foxcolab user.