How Exposed Are You Online? A 30-Second Privacy Audit

Most people think they're safe online because they "use a VPN." But a VPN is only one layer of many. Your browser leaks data in ways most people never consider.

What Your Browser Reveals About You#

Every time you visit a website, your browser sends:

• Your IP address (even through some VPNs via WebRTC)
• Your exact browser and OS version (User-Agent header)
• Your timezone and language (Accept-Language header)
• Your screen resolution and GPU model (JavaScript fingerprinting)
• Your installed fonts (Canvas fingerprinting)
• Your DNS queries (potential DNS leak)

Combined, these create a unique "fingerprint" that can track you across websites — even without cookies.

The Privacy Audit#

I built a free tool that tests all of this in 30 seconds:

1. IP Exposure — Is your real IP visible? Is it behind a VPN?
2. DNS Leak Test — Are your DNS queries going to your ISP instead of your VPN?
3. HTTP Headers — What does your User-Agent and Accept-Language reveal?
4. Browser Fingerprint — How unique are your GPU, screen, and hardware?
5. WebRTC Leak — Can WebRTC bypass your VPN and expose your real IP?
6. Connection Security — Is your connection encrypted?

You get a score from 0 to 100 with specific findings and severity ratings.

Try it: http://5.78.129.127/privacy-audit

How to Fix What It Finds#

I also wrote a comprehensive Privacy Hardening Guide covering:

• Firefox about:config settings that matter
• DNS-over-HTTPS setup for every OS
• VPN kill switch configurations
• Browser fingerprint reduction
• WebRTC disable instructions
• OS telemetry removal (Windows, macOS, Linux)

Read the guide: http://5.78.129.127/privacy-guide

Why I Built This#

Most privacy tools are built by VPN companies trying to scare you into buying their product. This one is built by a developer, runs on a server, and has zero ads or tracking.

If you find it useful, tip me on Lightning: devtoolkit@coinos.io ⚡

More free tools at http://5.78.129.127