A Reddit user discovered on July 25 that hundreds of shared Claude conversations were indexed by Google, exposing crypto wallet credentials, Social Security numbers, and legal discussions. The root cause was a missing noindex meta tag: Anthropic’s existing robots.txt file could not prevent indexing once share links appeared on public forums or social networks. Google began removing results on July 26 after Anthropic added noindex tags, but Bing was still surfacing shared links. A GitHub repository had already archived 453 Claude conversations and 519 Grok chats, totaling 11,241 messages in plain text.
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