Anthropic Claude's shared conversation has been indexed by Google, revealing sensitive information such as mnemonics

Reddit users have discovered that hundreds of Claude's shared conversations have been indexed by Google, including encrypted wallet mnemonics and sensitive information, because Anthropic did not add the noidex tag on the sharing page. Claude's public artifacts are also indexed, involving salary tables and internal data. Anthropic added the noidex tag on July 26th, and Google began removing related results, but Bing still displays some links; A GitHub repository has archived 453 Claude conversations and 519 Grok conversations, totaling 11241 plaintext messages.