Privacy Guides
In-depth articles on browser fingerprinting, VPNs, leak prevention, and online privacy. Written by security professionals.
Fingerprinting
What Is Browser Fingerprinting?
Learn how websites identify you without cookies using canvas, WebGL, fonts, and dozens of other signals.
The Secret Handshake: A Beginner's Guide to TLS Fingerprinting & JA4
Think your VPN makes you anonymous? Discover how TLS fingerprinting and the modern JA4 standard allow websites to passively track your browser's unique cryptographic handshake.
TCP/IP Fingerprinting and OS Detection
Learn how your operating system can be identified from TCP/IP packet characteristics like TTL, window size, and MSS.
Privacy
How to Prevent DNS Leaks
The definitive guide to DNS leaks - how your ISP silently logs every domain you visit even behind a VPN, the four leak vectors (SMHNR, IPv6, transparent proxying, split tunneling), encrypted DNS protocols (DoH, DoT, DoQ), platform-specific fixes for Windows, macOS, Android, iOS, and Linux, and how to verify your connection is truly private.
WebRTC Leaks Explained
The definitive guide to WebRTC privacy leaks - how ICE, STUN, and TURN expose your real IP even behind a VPN, with browser-specific fixes for Chrome, Firefox, Safari, Brave, and Edge.
Privacy-Focused Browser Settings
Step-by-step configuration guides for Chrome, Firefox, Safari, and Brave to maximize your browsing privacy.
HTTP Headers and Privacy
The definitive guide to HTTP header privacy - how User-Agent, Referer, Accept-Language, Client Hints, and X-Forwarded-For expose your identity, enable browser fingerprinting via ETag tracking and Canvas hashing, and how to defend against passive surveillance.
Complete Guide to Online Anonymity
From VPNs to Tor to browser hardening - a practical roadmap to reducing your digital footprint.