Industry Newschromium extensionsbrowser securitymicrosoftdata exfiltration
Microsoft Warns About Malicious Chrome Extensions
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9.3
Microsoft issued an alert after uncovering a wave of malicious Chromium-based browser extensions posing as AI assistant tools that secretly harvested browser data and AI chat content. Defender found nearly 900,000 installs and active impact across more than 20,000 enterprise tenants, including full URLs, internal site details, and ChatGPT chat snippets, creating substantial privacy and compliance risks for organizations.
Scoring Rationale
Official Microsoft investigation reveals broad enterprise exposure and actionable mitigations; novelty limited because extension-based exfiltration is established.
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