Nullgen AI BlockerFor IT and security teams
Shadow AI, completely prevented
Keep source code, customer records, and internal documents out of public models by stopping the paste before it becomes an outbound request.
Data leaks through pastes, not just breaches
Someone pastes a stack trace, a contract, or a customer list into a public assistant — and it becomes training data that you cannot take back. Domain blocking just pushes them onto personal phones. Prompt blocking keeps people on managed devices, allow you to field legitimate AI requests instead of losing them to a phone you cannot see.
Why this helps
- 01
Prevents the paste
Sensitive text cannot be entered into an AI prompt, so there is no outbound request to investigate.
- 02
Coverage beyond a blocklist
New assistants appear constantly. Recognizing prompt behavior covers tools your blocklist has not caught up with.
- 03
No network re-architecture
A browser extension, not a proxy or an agent. No TLS interception, no certificate rollout, no new inline failure point.
Try the extension for free
Install the extension on the browsers you care about and AI prompt input stops working on them. No account, no cost, no data leaving the device.
What Pro will add
Pro turns per-browser protection into something you manage centrally, with enrolled devices, policy that syncs in real time, and a log of what was blocked.
In development. Newsletter subscribers hear first.
Pro
Pro for organizations
Fleet enrollment
Enroll managed browsers, group them by team or risk level, and confirm coverage.
Policy that syncs live
Push a change during an incident and see enrolled devices pick it up in real time.
Audit-ready logs
Retained records of blocked attempts, with export for your SIEM and compliance evidence.
Test it on your own laptop first
The free extension needs no procurement cycle. Install it, try to paste something into an assistant, and see what happens.