mediation.adnxs.com: How AppNexus Tracks Your Online Moves

The domain mediation.adnxs.com is part of AppNexus, now under Xandr (owned by Microsoft), and it relentlessly tracks your online behavior to fuel targeted advertising. This tracker invades your privacy by collecting detailed data about your browsing habits. Let’s break down what it does and how to shield yourself.

What Is mediation.adnxs.com?

Operated by AppNexus, mediation.adnxs.com serves as a mediation endpoint for ad delivery and tracking. It monitors your interactions across websites and apps, building profiles for advertisers to target you with precision. As Privacy Auditors, we’re alarmed by how deeply this tracker embeds itself into your digital life.

Data It Collects

This tracker grabs a wide range of personal data:

• Geolocation: Pulls your approximate location from your IP, sometimes narrowing it to your city.
• IP Address: Logs your internet identifier, linking your activity to specific locations.
• Device ID: Captures unique identifiers like IDFA or GAID to follow you across devices.
• Browsing History: Records URLs, pages, and time spent on sites.
• Ad Interactions: Tracks ad clicks, impressions, and engagement details.
• Cookie IDs: Uses third-party cookies to connect your activity over time.
• User-Agent Data: Notes your browser, OS, and device specifics.
• Referrer URLs: Logs where you came from before visiting a tracked site.
• Timestamps: Captures the exact timing of your actions.

This data creates a comprehensive profile, stripping away your anonymity.

Who Gets Your Data?

Your information doesn’t stay with AppNexus alone. It’s shared with:

• Advertisers: Companies using Xandr’s platform to target you with ads.
• Third-party Adtech Vendors: Entities in the real-time bidding system for ad placement.
• Data Brokers: Firms compiling profiles for marketing.
• Microsoft Affiliates: Other Microsoft entities using data for advertising.
• Law Enforcement: Microsoft’s transparency reports show frequent compliance with requests for IP and ad data.

How to Protect Yourself

At Privacy Auditors, we’re dedicated to guarding your privacy. Here’s how to block this tracker:

• Use Tracker Blockers: Deploy tools like Privacy Auditor’s paid service to stop mediation.adnxs.com scripts.
• Activate a VPN: Hide your IP with a VPN like Mullvad to disrupt location tracking.
• Switch to Privacy Browsers: Use Firefox with strict protections or Tor for anonymity.
• Disable Cookies: Block third-party cookies in your browser settings.
• Clear Data Regularly: Wipe cookies and browsing history to break tracking chains.

Combine these steps for stronger defense against invasive trackers like this one.

Sources

• Xandr Privacy Policy: https://www.xandr.com/privacy-policy/
• AppNexus Tracker Info: https://confection.io/trackers/adnxs-com/
• Microsoft Transparency Report: https://www.microsoft.com/en-us/corporate-responsibility/law-enforcement-requests-report

This is a legal disclaimer. All information is provided for educational purposes only.