Malicious Chrome Extensions Target 300K Users to Steal Data

Malicious Chrome Extensions Target 300K Users to Steal Data

First seen 12 Feb 2026, 21:16 UTC •GbhackersBleepingcomputerTheregisterThehackernewsInfosecurity-Magazine+23 •82% similarity •25.2

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A campaign involving 287 malicious Chrome extensions has been discovered, affecting over 37.4 million users. These extensions, masquerading as AI assistants, are designed to steal credentials, email content, and browsing information. Researchers from LayerX identified the AiFrame campaign, with some extensions still available in the Chrome Web Store.

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Timeline

2026-02-12
Bleepingcomputer reports on 30 malicious extensions stealing data
2026-02-12
Gbhackers reports on 287 extensions affecting 37.4 million users

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Tracked Entities in This Story

Gemini AI Sidebar AiFrame Anthropic Koi.ai Chrome Extension Chrome Web Store GitHub Mozilla Readability Library