Malicious Chrome Extensions Compromise AI Chat Data of 900,000 Users

Malicious Chrome Extensions Compromise AI Chat Data of 900,000 Users

First seen 31 Dec 2025, 07:13 UTC •ThehackernewsSecurityboulevardCyberinsiderScworldCybersecuritynews •73% similarity •25.4

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Malicious Chrome extensions, masquerading as legitimate AI assistant plugins, have been found to steal AI chat data from approximately 900,000 users. Discovered by OX Security, these extensions have been able to evade detection and were even endorsed by some sources, raising significant security concerns.

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OX Security Malware Chrome