Microsoft error sees confidential emails exposed to AI tool Copilot

Microsoft 365 Copilot Chat, an AI work assistant, had a bug that caused it to accidentally access and summarize confidential emails from users' draft and sent folders, even though those emails were marked as confidential and protected by security policies. The issue affected enterprise users and was first discovered in January, though Microsoft says no one gained access to information they weren't already authorized to see. Microsoft has since rolled out a configuration update worldwide to fix the problem.