Urban VPN Chrome Extension Found Harvesting AI Chat Prompts from Millions
In late 2025, the "Urban VPN Proxy" Chrome extension—prominently labeled 'Featured' in the Chrome Web Store and boasting over six million users—was discovered silently harvesting all prompts users entered into popular AI chatbots such as ChatGPT, Anthropic Claude, Microsoft Copilot, Google Gemini, and others. Security researchers found the extension covertly intercepted and exfiltrated sensitive data in real time, leveraging its widespread user base and the inherent trust of its browser privileges. The extension’s activity amounted to a massive privacy breach, putting both individuals and enterprises at risk of data exposure. This breach highlights a surge in supply chain and third-party risks posed by browser extensions in the modern SaaS ecosystem. Enterprise security teams face heightened challenges as unregulated extensions become vectors for data harvesting, especially as reliance on AI tools increases. Privacy expectations, compliance obligations, and trust in official app marketplaces are now under renewed scrutiny.
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