Third-party tracking

Third-party tracking refers to the practice in which a tracker on a website is set by a different website than the one the visitor is currently on. Third-party trackers are snippets of code that are typically installed on multiple websites. They collect and send information about a user’s browsing history to other companies, often for advertising purposes. If the same third-party tracker is present on many sites, it can build a more complete user profile over time.


Third-party tracking is slowly becoming a thing of the past. Ad blockers and browser restrictions like Safari’s intelligent tracking prevention (ITP) or Firefox’s enhanced tracking prevention (ETP) make third-party tracking less effective, consequently lowering data quality. Moreover, companies may be in trouble using third-party cookies on their websites without complying with privacy laws in a specific jurisdiction, such as PECR or TTDSG.

Learn more about ITP from our blog post: What Intelligent Tracking Prevention (ITP) means for web analytics & marketing [Updated]

Find more details about third-party tracking on the Piwik PRO blog:

To learn about differences between various types of customer data, read our articles:


  • Digital marketing in the energy sector: Key challenges and fixes

    Summary The European energy and utilities sector is changing quickly. Customers expect smooth digital experiences, personalized communication, and easy access to their data. At the same time, regulators continue to tighten privacy and security standards across the EU. For marketing teams, this creates a familiar dilemma – how to deliver relevant, data-driven experiences while staying…

  • From Customer Data Platform to Data Activation: Why we’re evolving our approach

    Our Customer Data Platform module is now called Data Activation, reflecting a fundamental shift from data collection to outcome-driven action. We’re changing more than just a name – we’re refocusing on what truly matters: turning behavioral insights into immediate business results.