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[LT-02] 900,000 Users Compromised: How to Choose an...

[LT-02] In January 2026, two malicious Chrome extensions with 900,000+ users were caught exfiltrating ChatGPT and DeepSeek conversations every 30...

March 8, 20268 min skaityti
Chrome extension securitymalicious extensionChatGPT privacyAI data protection

[LT-02]

The January 2026 Incident

In January 2026, security researchers discovered two malicious Chrome extensions that had compromised 900,000+ users.

The extensions' names were deliberately chosen to appear as legitimate AI enhancement tools:

  • "Chat GPT for Chrome with GPT-5, Claude Sonnet & DeepSeek AI" — 600,000+ users
  • "AI Sidebar with Deepseek, ChatGPT, Claude and more" — 300,000+ users

Both extensions were doing the same thing: **exfiltrating complete ChatGPT and DeepSeek con...

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