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Two Chrome Extensions Caught Stealing ChatGPT and DeepSeek Chats from 900,000 Users

The Hacker News
Actively Exploited
GoogleMalware

Overview

Cybersecurity researchers have identified two malicious Chrome extensions that have collectively attracted over 900,000 users. These extensions, named 'Chat GPT for Chrome with GPT-5' and 'Claude Sonnet & DeepSeek AI,' are designed to steal conversations from OpenAI's ChatGPT and DeepSeek, along with users' browsing data. The stolen information is sent to servers controlled by the attackers. This incident raises significant concerns about user privacy and data security, as many individuals may unknowingly be exposing sensitive information through these extensions. Users are urged to remove these extensions immediately and review their online security practices to protect their data.

Key Takeaways

  • Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
  • Affected Systems: ChatGPT, DeepSeek, Chrome Web Store
  • Action Required: Users should remove the malicious extensions from their browsers and monitor their accounts for any unusual activity.
  • Timeline: Newly disclosed

Original Article Summary

Cybersecurity researchers have discovered two new malicious extensions on the Chrome Web Store that are designed to exfiltrate OpenAI ChatGPT and DeepSeek conversations alongside browsing data to servers under the attackers' control. The names of the extensions, which collectively have over 900,000 users, are below - Chat GPT for Chrome with GPT-5, Claude Sonnet & DeepSeek AI (ID:

Impact

ChatGPT, DeepSeek, Chrome Web Store

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Users should remove the malicious extensions from their browsers and monitor their accounts for any unusual activity.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Google, Malware.

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