LeakSentry

About

Use this as your Chrome listing description:

LeakSentry — Real-time Data Leak Prevention for Your Browser

LeakSentry is a client-side Data Loss Prevention (DLP) extension that protects you from accidentally exposing sensitive data — API keys, cloud credentials, authentication tokens, private keys, credit cards, passwords, and more.

🔐 14 Threat Detection Engines • Credit card detection with Luhn-10 checksum validation • AWS, GCP, and Azure cloud credential scanners • API key detection for Stripe, GitHub, Slack, SendGrid, Twilio, and more • Private key detection (RSA, EC, PKCS#8, PGP, OpenSSH) • JWT token validation, SSH key detection, SSN detection • Database connection string scanner (MongoDB, PostgreSQL, MySQL, Redis) • Shannon entropy analysis for catching unknown high-entropy secrets • Custom regex patterns for organisation-specific data

🛡️ 5 Interception Points •  paste — blocked until you approve • Drag-and-drop — blocked until you approve • Form submission — blocked until you approve • File upload — scanned with timeout, warned but never blocked • Network requests — optional, warn-only monitoring

⚡ Zero-Trust, Zero-Cloud • 100% local processing — no data ever leaves your machine • No analytics, no telemetry, no tracking • Minimal permissions (storage + activeTab only) • Open architecture — inspect every line of code

⚙️ Customisable • Toggle individual detectors on/off • Add custom regex patterns for your organisation • Domain whitelist for trusted internal sites • Per-site enable/disable • Light/dark theme • Optional local activity log • Export/import settings across machines

LeakSentry is your last line of defence against accidental credential exposure and data breaches.