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[LT-01] 900,000 Users Had Their AI Chats Stolen—Was...

[LT-01] Two malicious Chrome extensions stole ChatGPT conversations from 900,000+ users. One had Google's 'Featured' badge.

February 21, 20266 min skaityti
Chrome extension securityAI chat theftChatGPT privacymalware

[LT-01]

The December 2025 Chrome Extension Breach

In December 2025, security researchers at OX Security made a disturbing discovery: two Chrome extensions had been silently stealing AI chat conversations from over 900,000 users.

One of these extensions carried Google's "Featured" badge—the supposed mark of trustworthiness.

How the Attack Worked

The malicious extensions operated with devastating simplicity:

Step 1: Legitimate Appearance

The extensions offered useful features—productiv...

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