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Rampart filters personal information on-device before chatbot requests

ndstudio.gov Editor score 6/10

Rampart combines regular expressions for identifiers with MiniLM to detect names and street addresses on-device. This offers a practical client-side layer for limiting what sensitive data reaches remote AI services.

What: Rampart is an open-source, browser-native system that filters personal information on-device before chatbot messages are sent.
How: Regular-expression rules catch structured identifiers, while MiniLM uses context to find names and street addresses; the browser redacts detected PII.
Why it matters: For AI builders, local filtering offers a privacy layer before requests leave the device, avoiding reliance on remote filtering.

On-device readers inspect a message before the browser sends its redacted form onward. Sketched from the article's own text.

Read on ndstudio.gov → Hacker News · 32 comments

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