KASAH_

A privacy layer
between you and AI.

Kasah works seamlessly in the background to protect all of your sensitive information.

Protected
Data protected0 items · sent to ChatGPT successfully
How it works

A small browser extension.
Automatic protection.

Always on, never in the way.

Kasah lives in your browser and runs silently in the background, automatically protecting you from the moment you install it. Nothing to set up and nothing different about how ChatGPT feels to use.

Catches what's sensitive in the moment.

Kasah watches for every time you type sensitive information. It steps in and replaces those instances with placeholders before they can leave for ChatGPT. ChatGPT answers the redacted version. When the response comes back, Kasah switches your original data back in.

Reads like a careful editor.

Kasah reads your prompt the way a careful editor would. It identifies names, financial figures, addresses, account identifiers, and the context-dependent content that simple pattern matching walks straight past. The Kasah Engine is built to catch the harder content too — and your real values are restored from an encrypted vault that never leaves your device.

We can't leak what we never keep.

Your prompts are processed in memory and never stored — not by Kasah, and not by the zero-retention infrastructure our engine runs on. Your real values live in an encrypted vault on your device, and the map between real and protected never touches our servers. The protection is in the architecture, not the promise. We didn't write a privacy policy and ask you to trust it. We built the product so your data can't pile up anywhere — not even with us.

Install for Chrome
Paste your NDA
Ask about your symptoms
Upload your cap table
Draft with client names
Analyze your contracts
Search your financials
Summarize your board deck
Brainstorm your product
...like nobody's watching.
Pricing

One plan.
Full protection.

No tiers. No upsells. No "pro features".

$3.99/ month
Cancel anytime
Install for Chrome
What's included
  • 01AI-powered entity detectionNames, emails, financials, addresses — Kasah is built to catch all your sensitive data.
  • 02File redactionPDF, DOCX, XLSX, PPTX. Same protection for files as for prompts.
  • 03Kill switchIf protection fails for any reason, Kasah blocks the prompt before it can be sent. You see why, and you choose what to do.
  • 04Your data stays yoursReal values are restored from an encrypted vault on your device. Prompts are never stored, never logged, never used to train anything.
About

Why Kasah exists.

We have never been more careful with our data. We use VPNs, password managers, and two-factor authentication.

Then we open ChatGPT. We paste our salary, our medical history, and our contracts into a chat window built by people we have never met.

The leaks have already happened. Researchers have found over a million AI chat records sitting unprotected on open databases. OpenAI has publicly apologized for a breach that exposed user names and emails. Banks, hospitals, and major employers have quietly banned their staff from these tools. And the default policy still reads the same way: what you type is collected, stored, and used to train the next version of the AI model.

Almost everyone we know self-edits before they paste into ChatGPT. The contract goes in with the name changed. The medical question goes in as "asking for a friend." The bank statement goes in with personal information blacked out. The legal question goes in framed as fiction.

Kasah is the layer that should have existed from day one. Before a prompt or document reaches ChatGPT, every name, figure, and contract clause is identified and replaced with a placeholder. The model answers the redacted version. Kasah swaps the real values back on your machine. ChatGPT never sees the original — and Kasah never keeps it.

"We didn't spend years locking down our data just to hand it over to a chat window."

Founder · Kasah