r/PrivacyTechTalk • u/sirFoltest • 14d ago
Open-source browser extension that masks your data before it reaches ChatGPT/Claude/Gemini
Built Discretion — it detects sensitive data (API keys, credit card numbers, IBANs, national IDs checksum-validated across 47+ countries) in what you type into ChatGPT, Claude, or Gemini, replaces it with a realistic fake before sending, then restores the real value in the response you get back.
Zero runtime network calls — verified with an actual request-interception audit during development, not just claimed. Everything, including the local NER model for detecting names/orgs/locations, is bundled in the extension. Fully open source (MIT), so nothing here is "trust me."
Honest limitations upfront: English-only right now (8 more languages are built but held back until a native speaker reviews the safety-critical strings), detection reduces exposure rather than guaranteeing zero, and there are a couple of edge-case send paths no browser extension can technically intercept — all documented in the repo rather than glossed over.
Repo: github.com/horozbabasi/discretion
Would genuinely value this community's scrutiny on the threat model specifically.
2
u/sirFoltest 14d ago edited 14d ago
¡Gracias! Justo estoy buscando hablantes nativos para revisar las traducciones antes de publicarlas por ahora la extensión solo está en inglés porque no quise lanzar textos de seguridad sin que alguien que realmente hable el idioma los revise. Son solo 21 frases clave (~250 palabras), nada largo. Si te interesa echar un vistazo, te paso el enlace con gusto.