PromptVigilPromptVigil

Privacy Policy

Last updated: April 19, 2026

Introduction

Prompt Vigil (“we,” “our,” or “us”) is committed to protecting your privacy. This Privacy Policy explains how our browser extension and related services collect, use, and safeguard your information when you use Prompt Vigil to protect yourself while interacting with AI assistants like ChatGPT, Claude, Gemini, Copilot, Grok, and Perplexity.

Information We Collect

Data Processed Locally (Not Collected)

The core protection features of Prompt Vigil run entirely on your device. The following data is analyzed locally and is never sent to our servers:

  • Text you type into AI chat prompts (scanned for sensitive data patterns)
  • AI responses (scanned for suspicious links and scam indicators)
  • Detection of secrets, API keys, passwords, and personal information
  • Prompt injection and malicious instruction detection

Account Information (If You Create an Account)

If you choose to create an account for Pro, Team, or Enterprise features, we collect:

  • Email address (for account authentication and communication)
  • Name (optional, for account personalization)
  • Subscription and billing information (processed by Stripe)

Usage Analytics (Optional)

With your consent, we may collect anonymized usage statistics to improve our service, such as:

  • Number of prompts scanned (not the content)
  • Types of threats detected (categories only, not specific content)
  • Feature usage patterns
  • Browser and extension version

How We Use Your Information

We use the information we collect to:

  • Provide and maintain the Prompt Vigil service
  • Authenticate your account and manage subscriptions
  • Send important service updates and security notifications
  • Improve and optimize our protection algorithms
  • Provide customer support
  • Comply with legal obligations

Data Security

We implement industry-standard security measures to protect your data:

  • All data transmitted to our servers is encrypted using TLS 1.3
  • Account passwords are hashed using bcrypt
  • We do not store or have access to your AI conversations
  • Local processing ensures your prompts never leave your device
  • Regular security audits and vulnerability assessments

Data Sharing

We do not sell your personal information. We may share data only in the following circumstances:

  • Service Providers: We use Stripe for payment processing. Stripe's privacy policy applies to payment data.
  • Legal Requirements: We may disclose information if required by law or to protect our rights.
  • Business Transfers: In the event of a merger or acquisition, your data may be transferred to the new entity.

Your Rights

Depending on your location, you may have the following rights:

  • Access: Request a copy of the personal data we hold about you
  • Correction: Request correction of inaccurate personal data
  • Deletion: Request deletion of your personal data
  • Portability: Request a copy of your data in a portable format
  • Opt-out: Opt out of analytics data collection at any time

To exercise these rights, contact us at privacy@promptvigil.app

Data Retention

We retain your account information for as long as your account is active. If you delete your account, we will delete your personal data within 30 days, except where we are required to retain it for legal or legitimate business purposes.

Children's Privacy

Prompt Vigil is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately.

International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place to protect your data in accordance with this Privacy Policy.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any material changes by posting the new Privacy Policy on this page and updating the “Last updated” date. Your continued use of Prompt Vigil after any changes indicates your acceptance of the updated policy.

Contact Us

If you have any questions about this Privacy Policy or our data practices, please contact us at: