Real-time detection catches credit cards, API keys, and personal information in form fields—before you submit.
Download "Leak Prevention Playbook" and learn how to protect your sensitive data
Real-time detection, AI-powered intelligence, and seamless workflows keep your org protected without slowing anyone down.
Catch sensitive data instantly with our browser extension and /phishing/detect API endpoint. Pattern matching plus AI scans work together to flag credit cards, API keys, SSNs, and more.
Scan documents for PII with the /documents/upload API. Coming soon: /scan and /analyze-context endpoints for usage-based scanning. Teams share custom detection patterns across the org.
Use Slack slash commands to check text for PII, get automatic document scanning, and receive real-time team alerts when sensitive data is detected. Currently in beta.
Every day, thousands of people accidentally paste sensitive information into the wrong place
API key about to be sent over Email
Credit card going public on GitHub
SSN about to be sent to AI
One moment of distraction. One wrong window. One catastrophic data leak.
PasteProof stops this before it happens.
Actively in development — new features shipping regularly
Every day, teams accidentally share sensitive information in Slack channels—API keys, credentials, customer data, and more. PasteProof monitors your Slack messages in real-time and alerts you before sensitive data is shared.
Detects sensitive data before it's posted
Get notified immediately when PII is detected
Keep your entire team protected with custom policies
Free to install • Works with all Slack plans
No configuration. No learning curve. Just type normally—PasteProof handles the rest.
Add PasteProof to Chrome. One click. No account required to start.
Get the extension
Privacy & security
Work exactly as you always do. PasteProof watches your form inputs in real-time and alerts you before you submit.
About to submit something dangerous? PasteProof detects it immediately with a visible badge and gives you options: anonymize or cancel.
Already installed the extension? Test it out in our interactive playground with sample credit cards, SSNs, emails, and more.
Open PlaygroundPasteProof doesn't just look for patterns—it understands context. Our AI distinguishes between:
Stop false positives. Start protecting what actually matters.
We minimize data retention, anonymize PII before storage, and never sell your data. Learn how we handle your data
Need data residency compliance? We deploy on-premise
Start Protecting Your Data in 60 Seconds
Install PasteProof and never worry about accidental data leaks again.
