Copilot Chat briefly exposed confidential emails to AI, prompting a worldwide fix
Microsoft confirmed an error where its Copilot Chat could surface confidential emails from a user's Drafts and Sent Items in Outlook, despite sensitivity labels and data loss prevention policies. A configuration update has been rolled out worldwide, with Microsoft stating access was limited to information users were already authorized to see. Experts warn such glitches are likely as AI features proliferate, emphasizing privacy-by-default and stronger governance; NHS notices attribute the root cause to a code issue but say no patient data was exposed.