What You Should Know About Chrome Extensions
Many people use browser extensions to simplify tasks like blocking ads, checking grammar, and managing passwords. However, a recent discovery has revealed that even these seemingly harmless tools can pose significant risks. Security researchers have uncovered a set of Chrome extensions that, while appearing innocent, were actually collecting users' data without their consent. These extensions were designed to conceal their true purpose. Once installed, they quietly monitored users' online activities, tracking the websites they visited and even capturing sensitive information. These tools were part of a targeted spyware campaign, specifically crafted to spy on individuals.
Here are some of the latest examples of tactics cybercriminals are using:
- Extensions That Appear Normal Initially and Activate Later: These act as legitimate first installed, passing security checks. Later, an auto-update adds hidden spyware
- Hijacked Developer Accounts via Phishing: Attackers send fake emails to extension developers, impersonating Google and asking for "policy" fixes. Clicking leads to a malicious OAuth app that lets attackers update the extension remotely
- Polymorphic Impersonation and Extension Disabling: Malicious extensions can mimic other, trusted ones. They may disable real security tools and copy icons, fooling users visually
Google has since removed these extensions from the Chrome Web Store. However, by the time they were taken down, many users had already installed them and were unaware that they were being monitored.
Takeaways:
- Check who made the extension. Before installing any browser extension, review the developer's name and read the reviews. If something seems off or there's little information, think twice
- Use fewer extensions. Only install what you truly need. The more add-ons you use, the more doors you open for problems
- Review your current extensions. Go through your browser settings and remove any tools you don't use or don't remember installing
- Keep your browser updated. Security updates help catch and remove bad actors like these extensions
- Watch for strange behavior. If your browser slows down, crashes, or starts showing unusual pop-ups, it could be a sign of a harmful extension
We often think of spyware as something hidden in shady downloads or sketchy websites. However, even trusted platforms like the Chrome Web Store are now vulnerable. Staying safe online doesn't require technical skills—just a few good habits and a healthy dose of caution.
#ALTACyber
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Genady Vishnevetsky
Chief Info Security Officer
Stewart Title Guaranty Company
Houston TX
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