p21-ad-sg.ibyteimg.com: Invasive Tracking by an Obscure Ad Network

The tracker p21-ad-sg.ibyteimg.com lurks in the adtech space, monitoring your browsing to build profiles for targeted ads. Its lack of transparency makes it a significant privacy threat. Here’s what we know and how to protect yourself.

What Is p21-ad-sg.ibyteimg.com?

This domain appears to be part of an advertising network, though its ownership is unclear. It tracks user behavior across websites for ad targeting, invading your privacy with minimal accountability. As Privacy Auditors, we’re alarmed by such hidden trackers.

Data It Collects

When you encounter this tracker, it grabs:

• IP Address: Your network location, tied to physical addresses.
• Geolocation: Lat/long derived from IP for regional targeting.
• Browsing History: URLs visited and content interacted with.
• Device ID: Unique identifiers for cross-site tracking.
• Click Data: Specific ad interactions with timestamps.
• Cookie IDs: Persistent trackers for session continuity.
• Browser Type: Chrome or Safari, with version details.
• Operating System: Windows or Android, including builds.
• Page URL: Full path of pages with ad content.
• Timestamps: Precise timing of ad interactions.

This builds a marketable profile of your online activity.

Who Gets Your Data?

This tracker likely shares data with:

• Ad network operator for targeted ad delivery.
• Third-party advertiser for campaign targeting.
• Data broker in the adtech ecosystem for profiling.
• Government authority upon legal request, if identifiable.

How to Protect Yourself

As Privacy Auditors, we recommend these steps to block unknown trackers:

• Use Tracker Blockers: Tools like Privacy Auditor can disable p21-ad-sg.ibyteimg.com scripts.
• Mask IP: Use a VPN like Mullvad to hide your location.
• Clear Cookies: Delete tracking cookies regularly to stop profiling.
• Browse Anonymously: Use browsers like Tor for better privacy.

Combine these for robust protection.

Sources

• General AdTech Privacy Concerns: https://www.eff.org/issues/online-advertising

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