BeatMask

Detect and mask sensitive data before it reaches AI platforms like ChatGPT, Claude, and Gemini.

Every paste is permanent. Every prompt is stored. Now you control what gets out to AI. BeatMask protects your data on ChatGPT, Claude, Gemini, Copilot, and Perplexity. It scans every keystroke, paste, and file drop in real time, on your device, in under 100ms. Credentials and high-risk data get masked automatically. Everything else gets flagged so you can decide. Fast, local, and invisible until it matters. Text, PDFs, images, spreadsheets, code files, Office docs. 75+ file types checked before anything reaches the AI. 330+ detection rules covering healthcare, legal, finance, insurance, education, immigration, real estate, government, and software engineering. Coverage across 80+ countries. WHAT IT CATCHES Credentials & Secrets API keys for AWS, OpenAI, Stripe, GitHub, Slack, and 80+ other platforms. Database connection strings. SSH and PGP private keys. JWTs and OAuth tokens. Financial & Banking Credit cards, bank accounts, routing numbers, IBAN, SWIFT codes. Wire transfer references, loan account numbers, insurance policy IDs. Crypto wallet addresses for Bitcoin, Ethereum, Solana, and more. Healthcare & HIPAA NPI and DEA numbers, Medicare beneficiary IDs, health plan identifiers, prescription numbers, lab accession IDs, clinical trial numbers. Legal & Privileged Attorney-client privileged content, federal and state case numbers, PACER accounts, bar numbers, patent and trademark filings, IOLTA trust accounts. Government & Immigration SSNs, ITINs, EINs, passport numbers, driver's licenses (state-specific formats), visa numbers, Global Entry KTNs, USCIS receipt numbers, Aadhaar, NHS numbers. Education & Identity FERPA-covered school identifiers, student record codes, email addresses, phone numbers, physical addresses, dates of birth, device advertising IDs. HOW IT WORKS Install the extension. No account, no signup, no configuration. BeatMask activates on supported AI sites and works silently in the background. Dangerous data gets masked before you send it. PRIVACY WE NEVER COLLECT ANY DATA FROM YOU. EVER. Everything runs locally in your browser. No data leaves your machine. No cloud processing. No telemetry by default. Open dev tools and check the network tab yourself. Free to use. Learn more at beatmask.com