Security researchers uncover how a widely-used AI integration leaks sensitive spreadsheet contents to external servers. A investigation into one of Google Sheets' most popular artificial intelligence extensions has exposed a significant privacy vulnerability affecting countless users who rely on the tool for daily work. The plugin, which integrates ChatGPT capabilities directly into spreadsheets, appears to transmit complete workbook contents to servers outside of Google's infrastructure without explicit user consent. According to Hacker News, the discovery has sparked considerable debate within the developer and security communities about the risks posed by third-party AI integrations in productivity software. The discussion attracted 115 points and generated 39 comments from concerned technologists and end users. The exfiltration mechanism works through a relatively straightforward process.…