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 in their browser or managed mobile device. Deploy with zero-touch provisioning through Intune, Jamf, Google Workspace, or Group Policy.
Try a 30 day free trial of our Pro plan for Enterprise IT and security teams.
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. A blanket block on the office network just pushes them onto personal phones. Prompt blocking keeps people on managed devices and lets you field legitimate AI requests instead of losing them to a phone you cannot see, and the mobile app extends the same policy to the phones you do manage.
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
The browser extension is not a proxy: no TLS interception, no certificate rollout, no new inline failure point. The coming desktop agent blocks on the device itself, never through your network.
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 adds
Pro turns per-browser protection into something you manage centrally: enrolled devices, policy that syncs in real time, access requests you approve or deny, and the mobile and desktop apps.
Every device, one account
The extension covers the browser. The apps cover the phone, the tablet, and soon the whole desktop. Policies and approvals follow the person across all of them.
- Free forever
Browser extension
Blocks typing and pasting into AI prompts on any website. Free forever, no account, everything on-device.
Chrome
Edge
Firefox
Safari
- Included in Pro
Mobile app
Stops known AI apps and websites from loading on the phone or tablet, in every browser and in the apps themselves.
- iOS
- AndroidSoon
- Coming soon
Desktop agent
Will stop known AI apps and websites across the whole Mac or Windows computer, including desktop AI apps the extension cannot see.
- macOSSoon
- WindowsSoon
Pro
Pro for organizations
Pro force-installs across the fleet, eliminates AI surfaces, syncs policy in real time, and routes access requests to approvers.
Users and devices
Enroll machines and link iPhones and iPads, assign them to managed users, and choose who can approve for them.
Approved exceptions, not workarounds
Staff can request temporary or permanent AI access. Approvers approve or deny each request.
Policy that syncs live
Push a change during an incident and see enrolled devices pick it up in real time.
Zero-touch provisioning
Force-install through Intune, Jamf, Google Workspace, or GPO so browsers enroll automatically.
Test it on your own laptop first
The free extension needs no procurement cycle. Install it, try to paste something into an assistant, then roll the same control out with zero-touch MDM when you are ready.