Thread by @TheAIColony

🚨 Clearing your cookies does nothing.

That is not how they track you anymore.

Texas A&M and Johns Hopkins just published the first peer-reviewed proof.

It is called browser fingerprinting.
Here is what they found and what actually stops it:

Your browser leaks signals on every page load.

Screen resolution. Installed fonts. GPU model. Time zone. Browser version.

Alone, each one is harmless.
Combined, they form a fingerprint unique to your device.

No cookie. No login. No permission.
They see the fingerprint. They know it is you.

Texas A&M and Johns Hopkins built a tool called FPTrace.

Published at the ACM Web Conference 2025.

What they proved for the first time:
When your fingerprint changes, the price advertisers pay to target you changes with it. In real time.

This is not passive collection. This is active commercial targeting.

They tested users who had legally opted out under GDPR and CCPA.
Still fingerprinted.

The opt-out covered cookies.
Fingerprinting runs underneath the law entirely.

The exit door they gave you does not go where you think.

Cookies are dying.

Google is phasing them out. Apple blocked them years ago.

The $600 billion ad industry needed a replacement you cannot clear, block, or reset.

Fingerprinting is that replacement.

Invisible. Persistent. Automatic. Rebuilt if your setup changes.

You never see it. You never agreed to it.

Every page load broadcasts this without asking:

→ Screen resolution and color depth
→ Installed fonts
→ GPU model
→ Audio processing signature
→ Browser and plugins
→ Time zone and language
→ Whether you have an ad blocker
→ Canvas rendering signature
→ Battery level

No click required. Loading the page is enough.

Princeton researchers tested the top 10,000 websites.

Fingerprinting scripts on 88% of them.

The EFF tested browsers directly.
83% had a fingerprint unique enough to track with no cookies at all.

You do not have to visit a shady site.
You just have to open a browser.

FIX 1: YOUR BROWSER

This is the biggest decision.

Tor Browser — forces all users to share one fingerprint. The only browser that defeats it by design.

Brave — randomizes your fingerprint every session. Canvas, WebGL, audio all slightly altered.

Firefox — with Strict mode on, blocks many fingerprinting scripts.

Chrome — no native protection. Avoid for anything sensitive.

FIX 2: TWO EXTENSIONS

Firefox or Brave only. Both free.

uBlock Origin
Blocks fingerprinting scripts before they run.
Add-ons → search uBlock Origin → Install

Note: Chrome killed uBlock Origin's full version in 2024 with Manifest V3. Firefox only for real protection.

CanvasBlocker
Randomizes your canvas output every time a site tries to read it.
Add-ons → search CanvasBlocker → Install

FIX 3: ONE SETTING

Firefox only. Takes 30 seconds.
Type about:config in your address bar.

Search: privacy.resistFingerprinting
Set it to true.

This standardizes your canvas, timezone, and font outputs so you look like everyone else.

Done.

Most people will get this wrong.

A rare browser setup makes you MORE trackable. Not less.

The more unique your fingerprint, the easier you are to identify.

This is why Tor forces everyone to look identical.

Anonymity through uniformity. Not obscurity.

If you install 30 privacy extensions and use a rare browser, you just built the most identifiable fingerprint on the network.

SOURCES

Texas A&M + Johns Hopkins FPTrace paper (ACM WWW 2025)

EFF Panopticlick / Cover Your Tracks:
coveryourtracks.eff.org

Princeton Web Transparency Project:
webtransparency.cs.princeton.edu

Firefox anti-fingerprinting documentation:
support.mozilla.org/en-US/kb/firef…

Brave fingerprinting protection:
brave.com/privacy-featur…

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