Show HN: Prompt Armour – Real-time PII detection for AI chatbots, 100% local (prompt-armour.vercel.app)

Prompt Armour has launched a new browser extension that provides real-time detection and redaction of personally identifiable information (PII) and sensitive data for users of AI chatbots like ChatGPT, Claude, and Gemini. This tool aims to address the growing concern over data leaks and breaches as employees inadvertently share private information, such as API keys or PII, when interacting with AI models. With high-profile incidents like the Samsung source code leak and substantial data exposures by Microsoft, the need for robust privacy measures has become crucial. Significantly, Prompt Armour operates entirely locally within the browser, ensuring that sensitive information is never transmitted to external servers, thus preserving user privacy and security. The tool instantly highlights and redacts potential leaks before users submit their prompts, allowing them to continue using AI tools without disruption. It supports a wide range of sensitive formats, from social security numbers to AWS keys, and offers customizable detection features. As organizations increasingly restrict the use of public AI tools due to data security risks, Prompt Armour provides a much-needed solution for maintaining data integrity while leveraging the capabilities of AI technologies.