cdn-pci.optimizely.com: Optimizely Tracker Exposed | Privacy Auditor
- Privacy Auditor Research Team
- Privacy , Trackers
- January 14, 2026
Table of Contents
cdn-pci.optimizely.com: How Optimizely Tracks Your Every Move
Optimizely’s tracker, cdn-pci.optimizely.com, lurks on websites to monitor how you interact with content. It collects a wide range of data to build user profiles for businesses, but this invasive tracking strips away your privacy. Here’s what it does and how to shield yourself.
What Is cdn-pci.optimizely.com?
This domain belongs to Optimizely, a platform that lets companies test different versions of their websites and personalize content. While it’s marketed as a tool for better user experiences, it captures detailed data about your behavior, creating a digital footprint that can be exploited.
Data It Collects
When you’re on a site using Optimizely, this tracker grabs:
- IP Address: Reveals your approximate location, tied to your home or workplace.
- User ID: Links your actions across multiple visits with a unique tag.
- Session ID: Tracks everything you do in one browsing session.
- Behavioral Data: Logs clicks, scrolls, and interactions with precise timestamps.
- Page URL: Records every page you visit, including specific parameters.
- Referrer URL: Notes where you came from, like a search result or ad.
- Browser Type: Captures your browser details, such as Chrome 120.0.
- Device Type: Identifies your device as mobile or desktop, with model info.
- Operating System: Logs your OS, like Windows 11 or Android 13.
- Screen Resolution: Records your display, such as 1920x1080.
- Cookie IDs: Uses cookies to track you across sessions.
This data creates a comprehensive profile of your online habits, ripe for misuse.
Who Gets Your Data?
Optimizely shares your information with:
- Website Owner: The business using Optimizely gets detailed reports on your behavior.
- Third-Party Analytics Partner: External tools process your data for deeper insights.
- Cloud Service Provider: Companies like AWS store your data on Optimizely’s behalf.
- Law Enforcement Entity: Data may be handed over during legal requests, per their policies.
How to Protect Yourself
Take control of your privacy with these steps:
- Use Tracker Blockers: Install extensions or services to block
cdn-pci.optimizely.comscripts. - Deploy a VPN: Mask your IP address with a VPN to obscure your location.
- Opt for Privacy Browsers: Use Firefox with strict tracking protection or Tor for anonymity.
- Disable JavaScript: Stop trackers by disabling JavaScript, though some sites may break.
- Clear Cookies: Regularly delete cookies to disrupt tracking across visits.
Combine these tactics for stronger defense against invasive tracking.
Sources
- Optimizely Privacy Policy: https://www.optimizely.com/legal/privacy-policy/
- Optimizely Data Processing Agreement: https://www.optimizely.com/legal/data-processing-agreement/
Warning
The cdn-pci.optimizely.com tracker collects invasive data like your IP address and behavioral patterns. Protect yourself with tracker blockers and a VPN.
This is a legal disclaimer. All information is provided for educational purposes only.
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