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Two Chrome Extensions Caught Secretly Spying on Users for Ad Fraud – December 2025

Author/Source: Mohit Kumar See the full link here

Takeaway

This article explains how two Google Chrome extensions, “PDF Toolbox” and “Webpage Screenshot,” were secretly collecting people’s information. This hidden data collection was part of a plan to trick advertisers, leading to the extensions being removed from the Chrome Web Store.


Technical Subject Understandability

Beginner


Analogy/Comparison

Using these spy extensions is like letting someone into your house to help with a small task, but they secretly take pictures of your belongings and share them with someone trying to trick you into buying things you don’t need.


Why It Matters

This matters because these extensions were stealing private details and using them for dishonest reasons, which is a major security risk. For instance, the article mentions that the extensions collected browsing history and took screenshots, potentially showing sensitive personal information without the user’s knowledge.


Related Terms

Chrome extensions, Ad fraud, Malicious, Exfiltration, User agents. Jargon Conversion: Chrome extensions are small programs that add new features to your web browser. Ad fraud is when people trick advertisers with fake ad clicks or views to make money unfairly. Malicious means something that is harmful or meant to cause damage. Exfiltration means secretly taking data out of a computer system. User agents are pieces of information that identify the type of browser and operating system you are using.

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