I'm a big fan of the "Share" feature in Claude. I use it all the time to share Skills, Artifacts and conversations, mostly. But now I'm going to think twice before sharing.
Over the weekend, security researchers and Reddit users discovered that hundreds of publicly shared Claude conversations could be found using Google search operators like site:claude.ai/share. The issue only affected chats that users had intentionally shared using Claude's public sharing feature — private conversations that were never shared were not exposed.