Claude users discovered their private AI chat conversations appeared in Google search results over the weekend, exposing sensitive information including crypto wallet data, access keys, and company files. A Reddit thread revealed the issue stemmed from Anthropic's robots.txt file configuration, which blocked search engines from crawling share pages but still allowed URLs to be indexed. The exposed chats became accessible to anyone clicking the indexed links, though Anthropic had not publicly addressed the matter at the time of reporting.
Robots.txt Configuration Allowed URL Indexing Without Page Crawling
A Reddit thread over the weekend showed the problem, with one simple search bringing up page after page of shared Claude chats. Anthropic's robots.txt file instructed search engines to skip its share pages, preventing crawlers from opening the pages to read content. However, Google still indexed the web addresses because other sites linked to them. Google's own guide confirms that blocked pages can appear in search results as URLs without descriptions. Screenshots circulating on X showed Claude links with the message "No information is available for this page" underneath each result. Bing displayed a similar message. Users could not see chat content in search previews, but anyone who clicked an indexed link could read the entire conversation.
Claude Share Feature Creates Public Web Pages by Default
Claude chats remain private by default until a user clicks the Share button. The Share function builds a public web page containing every message sent up to that moment. According to Anthropic's help pages, uploaded files and raw data pulled in by connected tools are excluded from shared pages. Team and Enterprise accounts cannot share chats publicly, limiting the exposure to free, Pro, and Max users. Users can access old share links under Settings, Privacy, then Shared chats, where they can click Unshare to remove public access.
Chainalysis Reports 158,000 Personal Wallet Hacks in 2025
Developers flagged the indexed chats, noting that wallet details and login credentials appeared among the search results. Chainalysis counted 158,000 personal wallet hacks in 2025, affecting 80,000 people and costing $713 million. The 2022 figure was 54,000 hacks. A leaked private key cannot be changed like a password, creating permanent security risks for crypto users. No confirmed reports of seed phrases, working keys, or stolen funds tied to the indexed Claude chats have emerged. The indexed pages have been removed from search results, but anyone with a saved link can still access the chats unless the owner unshares them.
Google Indexed Under 600 Claude Chats in September 2025
Google indexed just under 600 Claude chats in September 2025, according to Forbes reporting. OpenAI had discontinued its own public sharing option a month earlier and now faces a ChatGPT data sharing lawsuit. Anthropic could resolve the indexing issue by allowing Google to open share pages and adding a noindex tag directly on those pages.
FAQ
Why did Google index Claude chat links without showing their content?
Anthropic's robots.txt file blocked search engines from crawling the share pages, preventing Google from reading the noindex tags placed inside those pages. Google indexed the URLs because other sites linked to them, but could not display page descriptions or previews since crawling was blocked.
What information appeared in the indexed Claude chats?
The exposed chats contained crypto wallet data, access keys, CVs, and company files. Developers noted that wallet details and login credentials appeared among the search results, though no confirmed reports of working private keys or stolen funds have emerged.
