Stop staff from uploading sensitive files — before a byte leaves their machine.
Watch Dog scans uploads in real time, right inside the browser, and blocks or warns before secrets, PII, or client data reach ChatGPT, Slack, SharePoint, or any website. All scanning is local — no file content ever leaves the device.
Local-only scanning · No proxies · No agents · Deploy via MDM in an afternoon
Sensitive data detected before upload: 2 SSNs, 1 credit card, client PII. Nothing was sent.
- Local-first architecture
- Zero data exfiltration
- Manifest V3
- Works on 50+ upload destinations
Your DLP protects the network. Nobody's protecting the upload button.
Shadow AI
Employees paste and upload work documents into ChatGPT, Claude, and Copilot every day. Most DLP tools never see it.
Human error
The costliest leaks aren't hackers — they're a good employee attaching the wrong file to the wrong form.
Coverage gap
Legacy DLP targets technical staff and managed endpoints. The other 80% of people who upload files go unprotected.
Catches the leak before it happens
Install
Add to Chrome in one click, or push silently to the whole org via MDM.
Intercept
Watch Dog hooks file uploads at the browser layer and scans content locally in milliseconds.
Alert or block
If sensitive data is found, Watch Dog warns the user (or blocks per policy) before the upload completes. Admins get an audit trail.
Right-sized DLP that everyone actually adopts
Five reasons security teams pick Watch Dog over heavy, cloud-based DLP.
Local-first, zero exfiltration
File content never leaves the device. The opposite of API/agent DLP that ships your data to a vendor cloud.
Pre-upload interception
Stops the leak before it happens — intercepting FormData, XHR and fetch in the browser, not after the fact.
Covers the 80%
Legacy DLP targets the 10–20% of technical staff. Watch Dog protects everyone who uploads a file.
Deploy in an afternoon
Chrome Web Store install or silent MDM push. No proxies, no agents, no latency — minutes, not months.
Auditable & policy-driven
Org dashboard with a policy engine, audit logs, live telemetry and per-org RLS isolation.
An extension your staff barely notice. A dashboard your security team relies on.
Extension
Real-time, on-device scanning and redaction that works across 50+ upload destinations. Staff keep working; Watch Dog only speaks up when it matters.
- Pre-upload interception
- Local scanning in milliseconds
- Warn or block per policy
Sensitive data detected before upload: 2 SSNs, 1 credit card, client PII. Nothing was sent.
| User | Rule | Destination | Action |
|---|---|---|---|
| m.chen@acme.com | Credit card | chat.openai.com | Blocked |
| s.patel@acme.com | Client PII | drive.google.com | Warned |
| j.wong@acme.com | API key | github.com | Blocked |
| a.silva@acme.com | PHI (MRN) | slack.com | Blocked |
Dashboard
A policy engine, audit logs, and live telemetry — all content-free and isolated per org with row-level security.
- Policy engine
- Content-free audit logs
- Live telemetry & org-scoped RLS
Two ways to roll out. Both take minutes.
Self-serve
Sign up, invite your team with a link, set your policies. Live in an afternoon.
MDM / Enterprise
Silent deployment via chrome.storage.managed. No user sign-in required.
The lightweight, local-first alternative to heavy DLP
See how Watch Dog compares to Nightfall, Microsoft Purview, and proxy-based DLP.
Compare Watch DogFounding-customer pricing that undercuts everyone
Free for individuals; low per-seat for teams; custom for enterprise.
Free
Individuals & evaluation
Team
Small teams, self-serve
Business
Growing & regulated orgs
Privacy isn't a feature. It's the architecture.
All scanning happens on-device. Only content-free audit metadata reaches your org's isolated database — the easiest privacy review you'll do this quarter.
Read our security postureFrequently asked questions
Ready to close the human-error gap in your DLP?
Book a demo to see the org dashboard, or add the free extension and try pre-upload interception yourself.