Snowfence vs blocking AI tools at work
Blocking AI tools looks like the safest answer to data leaking through them. In practice, it moves the work to personal accounts and phones, where nothing is checked and nobody sees what leaves. Snowfence takes the other route: people keep using the AI tools they like, and only sensitive data is stopped.
Why do companies block AI tools?
Because the risk is real. A pasted contract, a customer list in a prompt, or an API key in a code snippet can end up with a service the company has no agreement with. Blocking the sites feels like it closes that door.
Why doesn’t blocking work?
- People still use AI. The work it saves is too useful to give up. When the company blocks it, people use a personal account on a personal laptop or phone instead.
- The company sees less, not more. Work done on a personal device is outside every control the company has. A leak there is invisible.
- The list never ends. New AI tools appear every week, and AI features arrive inside tools the company already uses. A blocklist is always behind.
- Agents don’t use websites. Coding agents and command-line tools call AI model services directly. Blocking chat websites does nothing about them.
- It costs the company the benefit. Teams that can’t use AI at work fall behind teams that can.
What does Snowfence do instead?
Snowfence lets every request through except the ones that carry sensitive data somewhere it shouldn’t go.
| Blocking AI | Snowfence | |
|---|---|---|
| Everyday prompts | Blocked | Pass untouched |
| A prompt with an API key | Blocked, along with everything else | The person is asked first, and shown the approved route |
| Customer data to a personal AI account | Blocked, or done on a phone instead | Blocked, with the reason and the approved company workspace |
| A new AI tool | Allowed until someone adds it to the list | Checked from the first day, because Snowfence spots AI tools by what they do |
| What IT can see | Nothing that happens on personal devices | Which rules matched, where and when, without the content |
Isn’t allowing AI riskier?
Only if nothing checks it. Snowfence checks at the points every AI tool has to pass: the network, the operating system’s kernel, tool connections (MCP) and the browser. A browser without a working Snowfence extension can’t reach AI sites, and a laptop where Snowfence has been switched off can’t sign in to company AI services. So “allowed” means allowed through the fence, not unwatched.
What Snowfence can’t stop
No tool stops every leak. Snowfence can’t see a phone pointed at a screen or a personal device, and it can’t stop an administrator who switches it off, though that cuts the laptop’s access to company AI services. The security page lists every limit.
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