Prevention, not detection

Your Files Stay Yours

Cyphora cryptographically binds your files to trusted apps. Ransomware and info-stealers can run — but your files remain ciphertext. They can't encrypt what they can't write to, and they can't steal what they can't read.

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Kernel-Level
Enforcement
Bank-Grade
Encryption
Zero-Knowledge
Architecture
Offline-First
No Internet Required

Why Antivirus and Backups Aren't Enough Anymore

Modern threats don't just encrypt your files — they steal them too. And they're getting faster.

Double Extortion

Attackers steal your data before encrypting it, then threaten to leak it publicly. Backups don't undo a data breach.

Info-Stealers Are Everywhere

Info-stealer malware silently exfiltrates credentials, session tokens, crypto wallets, and sensitive files. You may never know it ran.

Detection is Too Late

Encryption finishes in minutes. By the time your EDR alerts you, your files are already gone — or your data has already been exfiltrated.

Backups Don't Stop Theft

Restoring from backup doesn't undo a leak. If attackers exfiltrated your client files, legal documents, or private keys, the damage is done.

A Different Approach: Prevention by Design

Instead of trying to identify every possible threat, Cyphora ensures only trusted apps can ever see your files.

1

You Seal Apps You Trust

Select the applications you use to create and edit files — Photoshop, Blender, VS Code, Office, and more.

2

Everything Gets Encrypted

Files created by sealed apps are transparently encrypted. The apps work normally. Everything else sees ciphertext.

3

Threats Get Nothing Usable

Ransomware and info-stealers can run on your machine, but your files are ciphertext. The kernel driver blocks writes from untrusted apps, so ransomware can't encrypt files for ransom. And exfiltrated ciphertext is useless — no data breach.

Your Machine
User Mode
Sealed Apps
Untrusted Apps
Ransomware & Info-Stealers
Cyphora Kernel Mini-Filter — Blocks writes from untrusted apps, denies reads to ciphertext
Filesystem
Plaintext (only for sealed apps)
Ciphertext (for everything else)

What's Happening Under the Hood

🔒

Per-File Encryption

Each file is encrypted independently with its own authenticated encryption context. A kernel mini-filter redirects protected I/O to a user-mode encryption engine that encrypts before data touches disk and decrypts transparently on read. Apps see plaintext; the filesystem stores only ciphertext.

🔒

Zero-Knowledge Architecture

Most cloud services hold the keys to your data — which means they can access it, and anyone who compromises their servers can too. Cyphora takes the opposite approach: your encryption keys never leave your device. No third party — not Cyphora, not anyone with access to our servers — can decrypt your files. Nothing stored on our infrastructure is sufficient to unlock your data.

🛡

Hardened Execution Boundary

Sealed applications run inside a hardened execution boundary that blocks unauthorized code and module loading. Child-process and script abuse controls prevent sealed apps from being hijacked.

Sealed Instances

Run any app in two modes at once: a regular instance for everyday use and a sealed instance where everything you create is encrypted and protected. For example, use Edge for everyday browsing while a sealed Edge handles crypto transactions — both running side by side on the same desktop. Lock files, temp paths, and configs stay isolated so they never collide.

Protection for Everyone Who Creates Locally

Whether you're an artist, a trader, a researcher, or a team lead — your work deserves to survive.

🎨

Creators

Protect client work, portfolios, and asset libraries. Whether you're a designer, video editor, or YouTube/TikTok creator, your content is your livelihood — keep it safe from ransomware and info-stealers.

💰

Crypto / Web3

Secure wallets, transaction signing, and private keys. Stop clipboard hijackers and info-stealers from intercepting your assets.

📚

Knowledge Workers

Shield research, legal documents, and confidential reports. Your intellectual property is ciphertext to everyone except the apps you trust.

👥

Teams

Shared encrypted workspaces with policy enforcement and audit logs. Collaboration without compromise.

No Access, No Leverage

Ransomware needs to encrypt your files. Info-stealers need to read them. Cyphora blocks both.

Without Cyphora

  • Any process can read and write your files
  • Ransomware encrypts everything in minutes
  • Info-stealers exfiltrate plaintext credentials and data
  • Attackers threaten public leaks for double extortion
  • Detection always reacts too late

With Cyphora

  • Only sealed apps can read plaintext
  • Untrusted apps can't write to protected files — encryption is blocked
  • Info-stealers get ciphertext — useless for extortion
  • No leverage, no ransom, no data breach
  • Prevention by design, not detection

Start Protecting Your Work in 60 Seconds

No account required for basic protection. Download, seal your first app, and your files are safe. It's that simple.

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