VPN-Only Guestbook 🛡️ | Privacy-First Community Guestbook

Understanding Our Privacy & Security

Purpose & Community

This guestbook welcomes signatures from privacy advocates, security researchers, and members of privacy-focused communities worldwide. It serves as both a community hub for like-minded individuals and an educational tool demonstrating online tracking techniques.

Tracking Techniques Demonstrated

IP Fingerprinting

We demonstrate how websites identify users based on IP addresses, even when using VPNs. Highlighted entries show your previous signatures - proof that IP-based tracking is possible.

VPN IP Sharing

Multiple VPN users share the same IP. You'll see messages from others with your IP - showing why rotating VPN servers enhances privacy.

IP Caching

We cache IP information to reduce API calls. This demonstrates how websites remember visitors and their patterns over time.

Why It's Private & Secure

SHA-256 Hashing

All IP addresses in the guestbook are hashed using SHA-256. This is a one-way cryptographic hash - impossible to reverse back to the original IP.

No Personal Data

We don't collect names, emails, phone numbers, or any personally identifiable information (PII). Only your IP hash and public geolocation data.

XSS Protection

All inputs are sanitized using htmlspecialchars() and strip_tags(). Your messages cannot execute malicious scripts on other visitors' browsers.

GDPR Compliance

Our data collection practices comply with the General Data Protection Regulation (GDPR):

Minimal Data: Only necessary information is collected (IP hash, public geolocation).
Pseudonymization: IP addresses are hashed, not stored in plain text.
Transparency: This modal explains exactly what data we collect and why.
Right to Erasure: Contact us to request removal of your entries.
No Third-Party Sharing: Data is never sold or shared with advertisers or analytics companies.

Educational Purpose: This guestbook is designed to teach visitors about online tracking and privacy risks. The highlighting feature demonstrates how websites track users based on IP addresses - knowledge that empowers you to protect your privacy more effectively.

Guestbook Entries (1 total)

wd

Datacenter

hello humans!

Mar 13, 2026 Click for details

Location

Country: Spain

City: Madrid

Timezone: Europe/Madrid

EU Member State

Currency: EUR

Network

ASN: 63949

Organization: Akamai Technologies, Inc.

VPN: No Proxy: No Datacenter: Yes TOR: No