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Life & fun · April 9, 2026

LeakFinder

A Chrome extension to detect browser-visible security leaks

What it does

What it checks: Exposed API keys, tokens, JWT handling issues CORS misconfigurations and overly permissive cross-origin trust missing/weak security headers (CSP, HSTS, etc.) cookie security posture sensitive data leaking via local/session storage query/URL leaks and client-side state exposure source maps and build artifacts left exposed endpoint patterns from observed traffic

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  • LP
    Local Privacy Firewall-blocks PII and secrets before ChatGPT sees themDec 2025 · github.com · ▲111

    OP here. I built this because I recently caught myself almost pasting a block of logs containing AWS keys into Claude. The Problem: I need the reasoning capabilities of cloud models (GPT/Claude/Gemini), but I can't trust myself not to accidentally leak PII or secrets. The Solution: A Chrome extension that acts as a local middleware. It intercepts the prompt and runs a local BERT model (via a Python FastAPI backend) to scrub names, emails, and keys before the request leaves the browser. A few notes up front (to set expectations clearly): Everything runs 100% locally. Regex detection…

  • KD
    KeyLeak Detector – Scan websites for exposed API keys and secretsNov 2025 · github.com · ▲30

    I built this after seeing multiple teams accidentally ship API keys in their frontend code. The problem: Modern web development moves fast. You're vibe-coding, shipping features, and suddenly your AWS keys are sitting in a tag visible to anyone who opens DevTools. I've personally witnessed this happen to at least 3-4 production apps in the past year alone. KeyLeak Detector runs through your site (headless browser + network interception) and checks for 50+ types of leaked secrets: AWS/Google keys, Stripe tokens, database connection strings, LLM API keys (OpenAI, Claude, etc.), JWT…

  • LeakScope — Supabase Security AuditorMar 2026 · leakscope.tech · ▲3

    Scan websites for exposed Supabase data and API leaks

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