Naosuu is a browser extension that adds a privacy layer to existing generative AI workflows for legal professionals.
Key features and functions include:
Entity Detection and Pseudonymization
Naosuu identifies sensitive values in a prompt, including client and party names, case and matter numbers, financial figures, email addresses, physical addresses, employer identification numbers, bar numbers, and trademark registrations, and replaces them with structured placeholders before the prompt is sent to the AI tool.
Consistent Reference Mapping
The tool recognizes relationships between related references within a session, such as an organization's full name and its abbreviation, and assigns them the same placeholder so that the underlying document logic is preserved for the AI.
Local Restoration
Once the AI platform returns a response, Naosuu replaces the placeholders with the original values on the user's device, so the response is readable without the original information having been transmitted.
Document Protection
Naosuu can process uploaded PDF, Word (.docx), and plain text files locally, allowing a user to review detected values before copying protected content into an AI prompt.
On-Device Processing
Detection, placeholder mapping, and restoration take place locally in the browser rather than on Naosuu's servers; prompt text and uploaded document content are not transmitted to Naosuu.
AI Platform Compatibility
Naosuu operates across ChatGPT, Claude, and Google Gemini, functioning as an added layer rather than a replacement for those tools.
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