Question 1

What is browser fingerprinting?

Accepted Answer

Browser fingerprinting is a technique that collects information about your browser and device (screen resolution, installed fonts, plugins, etc.) to create a unique identifier. This identifier can be used to track you across websites, even without cookies.

Question 2

What data do websites collect about me?

Accepted Answer

Websites can collect extensive information including your IP address, browser type, screen resolution, installed fonts, timezone, language preferences, and more. This data can be used to create a unique fingerprint that identifies you across different websites.

Question 3

What are third-party trackers?

Accepted Answer

Third-party trackers are scripts and services from domains other than the website you're visiting. They monitor your browsing activity, often for advertising and analytics purposes. Common examples include Google Analytics, Facebook Pixel, and advertising networks.

Question 4

How do cookies track me?

Accepted Answer

Cookies can store unique identifiers that allow websites to recognize you across different pages and sessions. Third-party cookies are particularly problematic as they can track you across multiple websites, building a comprehensive profile of your online behavior.

Question 5

How can I protect my privacy online?

Accepted Answer

You can protect your privacy by using privacy-focused browsers (like Firefox or Brave), installing ad blockers, using VPNs, disabling third-party cookies, and regularly clearing your browser data. Our tutorials section provides detailed step-by-step guides.

Question 6

What is a VPN and do I need one?

Accepted Answer

A VPN (Virtual Private Network) encrypts your internet traffic and routes it through a remote server, hiding your real IP address from websites. While not necessary for everyone, VPNs can help protect your privacy, especially on public Wi-Fi networks.

Question 7

What is a DNS leak?

Accepted Answer

A DNS leak can occur when DNS queries bypass the tunnel you intended to use. A normal web page cannot enumerate your system resolvers, so this browser-only diagnostic reports public IP, organization, and DoH reachability without claiming that a leak was confirmed.

Question 8

What is a WebRTC leak?

Accepted Answer

WebRTC can expose LAN or public ICE candidates. A public STUN candidate is not proof of VPN bypass; compare it with your expected egress IP. This test reports the candidates it actually observes.

Question 9

What is the difference between cookies, localStorage, and sessionStorage?

Accepted Answer

Cookies are small text files sent to the server with each request. localStorage persists data across browser sessions until manually cleared. sessionStorage is cleared when the browser tab is closed. All three can be used for tracking, but cookies are sent to servers automatically.

Question 10

What are Secure and HttpOnly cookies?

Accepted Answer

Secure cookies are only sent over HTTPS connections, preventing interception. HttpOnly cookies cannot be accessed by JavaScript, protecting against cross-site scripting (XSS) attacks. Both are security best practices.

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