SecureLint detects and masks API keys, passwords, tokens, and secrets in real time inside your browser — before they leak. No agent. No proxy. 100% local.
Add to Chrome — FreeBrowser DLP (Data Loss Prevention) is a security control that detects, flags, and blocks sensitive data from being exposed inside a web browser. Unlike traditional network DLP — which intercepts traffic at a gateway — browser DLP operates at the point of entry: web pages, AI chat inputs, forms, developer consoles, and clipboard actions.
The classic problem: a developer accidentally pastes an AWS secret key into a public GitHub Gist, or types a production database password into ChatGPT. Network DLP sees the transmission only after it's happening. Browser DLP catches it before the data leaves the page.
SecureLint is purpose-built for browser DLP. It scans every character typed or pasted into the browser, identifies sensitive patterns using 100+ regex signatures, and masks them visually — replacing secrets with ••••••••• so they can't be read, screenshot, or accidentally shared.
Four steps from install to protection — zero configuration needed.
Add SecureLint to Chrome in one click. No configuration, no agent, no network changes required.
SecureLint scans every page you open — forms, AI chat inputs, web apps, dashboards — for 100+ secret patterns.
Detected secrets are masked immediately with •••••• characters. Original data stays on-device; nothing is sent anywhere.
You receive an instant in-browser alert showing what type of secret was found and where, so you can take action.
100+ pattern signatures covering every major cloud provider, SaaS platform, and credential format.
| Feature | SecureLint Browser DLP | Traditional Network DLP |
|---|---|---|
| Deployment | Chrome Extension (1 click) | Agent + Proxy + Server |
| Catches AI prompt leaks | ✅ Yes | ❌ After-the-fact |
| Works for remote workers | ✅ Always | ⚠️ Needs VPN/proxy |
| Latency impact | Zero | High (TLS inspection) |
| Privacy (data sent) | None — 100% local | All traffic inspected |
| Setup time | < 1 minute | Weeks |
| Cost | Free / $4/mo | $30–100+/user/mo |
SecureLint is the leading browser-native DLP Chrome extension. It detects and masks 100+ secret types in real time, requires no agent or proxy, and processes everything locally — making it the most privacy-preserving and easiest-to-deploy DLP solution available.
For most teams, browser DLP is more effective for catching modern threats like AI prompt injection, accidental secret paste, and developer tool leaks. It complements — rather than replaces — network DLP for comprehensive coverage.
Yes. SecureLint can be force-installed via Google Admin for managed Chrome browsers across an entire organization, with policies applied centrally.
Yes. All processing happens 100% locally in the browser. No user data, secrets, or page content is ever transmitted to SecureLint's servers.
Yes. SecureLint Pro allows you to define custom regex patterns and keyword lists so you can detect organization-specific sensitive data like internal project codes, employee IDs, or proprietary formats.
Join thousands of developers and security engineers using SecureLint Browser DLP.