Let employees use AI. Keep sensitive data inside.
Your teams already use ChatGPT, Claude, Gemini and Mistral — often on personal accounts. JanusTB checks every message in the browser before it is sent, and shows you what was about to leave.
0%
of employees paste data into GenAI tools, mostly from unmanaged accounts
LayerX, 2025
Banning does not work
Blocked tools come back on personal phones and accounts. A ban removes visibility, not usage.
One paste is enough
Customer files, IBANs, contracts and source code are pasted into chats in seconds.
No record for the auditor
When something leaks, nobody can say what was sent, by whom, or to which tool.
See what leaves before it leaves.
Employees paste sensitive data into AI chats every day. The JanusTB browser extension checks each message before it is sent.
- Works on ChatGPT, Claude, Gemini and Mistral
- Detects IBANs, card numbers, national IDs, secrets and more
- Block, warn or log — your policy decides
- Fail-closed: if JanusTB is unreachable, nothing is sent
- Available on the Chrome Web Store
Detection before sending
IBANs, card numbers, national ID numbers, phone numbers, secrets, API keys, private keys and more — with checksum validation to limit false positives.
Block, warn or log
Per policy: stop the message, warn the user and let them edit, or simply record the event.
Named users
Each extension key can be assigned to a named user, so events show who — not just which browser.
Fail-closed
If JanusTB cannot be reached, the message is blocked rather than sent unchecked.
Minimal permissions
The extension only runs on the chat sites it protects. Available on the Chrome Web Store.
One dashboard
Every event appears in the JanusTB dashboard and in the audit export for your SIEM.
- Sensitive data stopped before it reaches public AI tools
- Employees keep the AI tools they like, with guardrails
- A clear record of AI usage for security and compliance teams
See it on your own data flows.
A 30-minute demo with the founders, on the use case that matters to you.