Veillum Guard - Prompt Security Scanner

Tracking since Apr 16, 2026.

Changelog

• Apr 22, 2026
  description

  Veillum Guard is a Data Loss Prevention (DLP) extension that protects you from accidentally leaking sensitive information into AI services like ChatGPT and Claude.
  
  Before your message is sent, Veillum Guard scans it and alerts you if it detects:
  
  CREDENTIALS & SECRETS
  • AWS Access Keys and Secret Keys
  • Google Cloud (GCP) API Keys
  • GitHub Personal Access Tokens
  • JWT Tokens
  • Private Keys and Certificates
  
  PERSONALLY IDENTIFIABLE INFORMATION (PII)
  • Credit card numbers
  • CPF / SSN / National IDs
  • Email addresses and phone numbers
  • Password or secret value found in key=value pattern
  
  HOW IT WORKS
  Veillum Guard intercepts your prompt before submission and runs a scan using built-in rules — entirely on your device. No data is ever sent to a server.
  
  If a risk is found, a warning overlay appears showing exactly what was detected (masked for safety), so you can review and decide before sending.
  - 100% local — no data leaves your browser
  - Works on ChatGPT and Claude
  - Great detection rules

  Veillum Guard is a Data Loss Prevention (DLP) extension that protects you from accidentally leaking sensitive information into AI services like ChatGPT, Claude and Gemini.
  
  Before your message is sent, Veillum Guard scans it and alerts you if it detects:
  
  CREDENTIALS & SECRETS
  • AWS Access Keys and Secret Keys
  • Google Cloud (GCP) API Keys
  • GitHub Personal Access Tokens
  • JWT Tokens
  • Private Keys and Certificates
  
  PERSONALLY IDENTIFIABLE INFORMATION (PII)
  • Credit card numbers
  • CPF / SSN / National IDs
  • Email addresses and phone numbers
  • Password or secret value found in key=value pattern
  
  HOW IT WORKS
  Veillum Guard intercepts your prompt before submission and runs a scan using built-in rules — entirely on your device. No data is ever sent to a server.
  
  If a risk is found, a warning overlay appears showing exactly what was detected (masked for safety), so you can review and decide before sending.
  - 100% local — no data leaves your browser
  - Works on ChatGPT, Claude and Gemini
  - Great detection rules

• Apr 22, 2026
  host_permissions

  https://chatgpt.com/*, https://chat.openai.com/*, https://claude.ai/*, https://api.veillum.com.br/*, https://auth.veillum.com.br/*, https://presidio.veillum.com.br/*

  https://chatgpt.com/*, https://chat.openai.com/*, https://claude.ai/*, https://gemini.google.com/*, https://api.veillum.com.br/*, https://auth.veillum.com.br/*, https://presidio.veillum.com.br/*

Permissions & access

Permissions

storageidentity

Host access

https://chatgpt.com/*, https://chat.openai.com/*, https://claude.ai/*, https://gemini.google.com/*, https://api.veillum.com.br/*, https://auth.veillum.com.br/*, https://presidio.veillum.com.br/*

Screenshots