Blog

This is our tech blog where we write about privacy, dissect trackers and map the tracking landscape in popular sites.

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Government websites

If you are not the product, you're the taxpayer

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GDPR - What happened?

The tracking landscape post GDPR, adverse effects on competition and a market for compliance technologies

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Third-party cookies - the guests who won't leave

How the web ecosystem is preventing us from reverting the third-party cookie mistake.

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June Update - Do you consent?

The rushed, rough and rogue UX of services getting you to opt-in.

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Tracker Tax

The impact of third-party trackers on website speed in the United States.

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May Update - Countdown to GDPR

Facebook's "Tough" month and Google's recommendation

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Tracking visits without tracking people

A privacy-by-design approach.

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The end of google.{your country}?

Google's move to keep their cookies.

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April Update - Preparing for Internationalisation

A new data format to ease access to tracker data.

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February Update - The Tracking Shell Game

How mergers and acquisitions are hiding who actually is tracking us.

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WhoTracks.me January Update

New data and trackers in our monthly update.

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Making sense of the trackers on Reddit

Using whotracks.me data and sankey diagrams to dissect trackers

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WhoTracks.me December Update

New data and trackers in our monthly update.

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Generating Ad-Blocker filters from whotracks.me data

Let's never miss a new tracker again.

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The Impact of Tracking on User Experience

Beyond privacy - a survey of hidden and visible effects of tracking on user experience.

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Cookies

A small piece of data sent from a website, meant to 'help', used to track.

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Tracking Pixel

So, ... did you read my email?

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How Cliqz anti-tracking protects users from web tracking

Using an algorithmic, data-driven approach to remove unique identifiers that track users.

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What is a tracker?

Explaining what makes a particular domain a tracker

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How facebook knows exactly what turns you on

A technical analysis of the methods used to track users as a third party. Deep dive into a couple of case studies.

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Fingerprinting

Let me tell you what's unique about your device.

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Tracker Categories

Definitions for different types of trackers

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Where does the data come from?

An explanation of the origin of the data in this site, and why its collection is private.