Online tracking has become incredibly sophisticated. The old approach of blocking cookies is no longer enough — modern trackers use device fingerprinting, tracking pixels, CNAME cloaking, and dozens of other techniques to follow you across the web. This guide explains how tracking actually works and gives you specific, actionable steps to stop it.

⚠️ Simply using “Incognito Mode” does NOT stop websites from tracking you. It only prevents your browser from saving your local history.

How Online Tracking Actually Works

There are several different tracking methods in use today:

  • Third-party cookies: Small files placed by advertisers (not the site you are visiting) that track you across different websites
  • Device fingerprinting: Identifying your device by its unique combination of browser type, screen resolution, installed fonts, timezone, and other characteristics — no cookie required
  • Tracking pixels: Tiny invisible images embedded in web pages and emails that report back when they are loaded, revealing your IP address and device
  • Cross-site tracking via social buttons: Facebook and Google “Like” and “Share” buttons on other websites report your visits back to those companies even if you do not click them
  • CNAME cloaking: A sophisticated technique where trackers disguise themselves as first-party resources to evade blockers
  • Link tracking: URLs in emails and social media posts contain unique identifiers that track who clicked what and when

Step 1: Switch to a Privacy Browser

Your browser is your first line of defence. Switch to one that blocks tracking by default:

Brave Browser (Recommended)

Brave blocks ads, third-party trackers, fingerprinting, and bounce tracking by default. No configuration needed — it is private out of the box. Based on Chromium, so all Chrome extensions work.

Firefox with Privacy Settings

Firefox does not block everything by default, but with Enhanced Tracking Protection set to “Strict” mode and the right extensions, it is very private. Go to Settings > Privacy & Security > Enhanced Tracking Protection and select “Strict.”

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Step 2: Install These Browser Extensions

uBlock Origin — Essential

The single most effective tracker and ad blocker available. Open source, lightweight, and maintained by a trusted developer. Blocks ads, trackers, malware sites, and cookie consent popups. Install it immediately on any browser that supports it (Chrome, Firefox, Edge). Available free at the Chrome Web Store and Firefox Add-ons.

Privacy Badger — Intelligent Tracker Learning

Developed by the Electronic Frontier Foundation (EFF), Privacy Badger learns which trackers to block based on your browsing. It complements uBlock Origin nicely. Free and available for all major browsers.

ClearURLs — Remove Tracking Parameters

Removes tracking parameters from URLs automatically. When you copy a link from Google, social media, or newsletters, it often contains parameters like ?utm_source=newsletter&utm_campaign=promo that track who clicked. ClearURLs strips these silently.

Step 3: Change Your DNS Provider

Your DNS provider resolves website addresses and can see every domain you visit. Change from your ISP’s default DNS to a privacy-respecting alternative:

DNS Provider Address Features
Cloudflare 1.1.1.1 Fast, private, no logging
Quad9 9.9.9.9 Blocks malware domains
NextDNS Custom Highly customisable blocking
AdGuard DNS 94.140.14.14 Blocks ads at DNS level

Step 4: Use a Private Search Engine

Switch your default search engine to DuckDuckGo, Startpage, or Brave Search. These do not build profiles or track your searches. This is one of the highest-impact changes you can make. See our full article on private search engines for detailed comparisons.

Step 5: Manage Cookie Consent Properly

When websites show cookie consent banners, always click “Reject All” rather than “Accept All.” Most people click Accept out of habit or impatience, but this actively enables tracking. If there is no “Reject All” option, look for “Manage Preferences” and deselect everything except strictly necessary cookies.

Better still, install the “I don’t care about cookies” extension (or use uBlock Origin’s cookie filter list) to dismiss these banners automatically without accepting unnecessary cookies.

Step 6: Use a VPN

A VPN hides your IP address from websites and prevents your ISP from seeing your browsing activity. Your IP address is one of the most common tracking identifiers — it reveals your approximate location and can be used to link your activity across websites. A trustworthy VPN like ProtonVPN, Mullvad, or NordVPN adds a significant layer of protection.

Step 7: Audit Your Google Account

If you use Google services, visit myaccount.google.com and review your data and privacy settings. You can pause Web and App Activity tracking, Location History, and YouTube History. You can also download all the data Google has collected about you to see the extent of it — which is often eye-opening.

Final Thoughts

You will not achieve perfect privacy, and that is not the goal. The goal is to reduce unnecessary surveillance and make tracking you significantly more difficult and costly for data collectors. Installing uBlock Origin, switching browsers, and changing your search engine takes 15 minutes and eliminates the vast majority of everyday tracking. Start there and build from these foundations over time.