Privacy Policy for BlockNegativism

Last Updated: November 24, 2025

Thank you for using BlockNegativism ("we," "us," or "our"). This Privacy Policy explains how we handle information when you use our browser extension and website located at https://blocknegativism.top (collectively, the "Service").

Your privacy is fundamental to our mission. BlockNegativism is designed with privacy at its core - all content filtering happens locally on your device, and we never see or store your browsing data.

By using the Service, you agree to this Privacy Policy. If you do not agree, please do not use the Service.

1. Our Privacy-First Commitment

BlockNegativism is built on the principle that your browsing activity is private and should remain that way.

Zero Browsing Data Collection: We do not collect, store, transmit, or have access to the content you view while browsing. All sentiment analysis and content filtering happens entirely on your device using local machine learning models.

No Tracking: We do not track your browsing history, the websites you visit, or the content you interact with.

Local Processing: The browser extension processes all content locally in your browser. Your browsing data never leaves your device.

2. Information We Collect

2.1 Information We DO NOT Collect

We do not collect or have access to:
- Websites you visit
- Content you view or read
- Search queries you make
- Your browsing history
- Text that is analyzed or filtered by the extension
- Any personally identifiable information from your browsing activity

2.2 Information We DO Collect

For Free Tier Users (No Account Required):
- No personal information is collected
- Anonymous usage statistics may be collected (e.g., extension install/uninstall events) to help us improve the service

For Pro and Enterprise Users (Account Required):
- Name: To personalize your experience and for account identification
- Email Address: For account creation, authentication, subscription management, and important service communications
- Payment Information: Processed securely by Stripe, our payment processor. We do not store credit card details on our servers. We only retain your Stripe customer ID for subscription management.
- Subscription Details: Your current plan, subscription status, and billing cycle
- Device Count: Number of devices where the extension is actively used (for plan limit enforcement)

2.3 Technical Information

We collect minimal technical information:
- Browser Type and Version: To ensure compatibility and troubleshoot issues
- Extension Version: To provide appropriate updates
- General Device Information: Operating system type (not specific device identifiers)
- IP Address: Collected temporarily for security purposes and fraud prevention

2.4 Data Stored Locally on Your Device

The following data is stored locally in your browser and never transmitted to our servers:
- Your filtering preferences and custom profiles
- Whitelisted and blacklisted websites
- Custom keyword lists
- Extension settings and configurations
- Filtering statistics (if enabled)

This local data is encrypted using AES-256 encryption.

3. How We Use Your Information

We use the limited information we collect only for:

- Account Management: Creating and managing your account (Pro/Enterprise users)
- Subscription Processing: Managing your subscription, processing payments, and handling billing
- Customer Support: Responding to your questions and support requests
- Service Communications: Sending important updates about the Service, including security updates, policy changes, and subscription status
- Service Improvement: Understanding aggregate usage patterns to improve features (anonymized data only)
- Security and Fraud Prevention: Protecting our Service and users from fraudulent activity

We do not use your information for:
- Advertising or marketing to third parties
- Building user profiles for any purpose
- Training AI models on your browsing content
- Selling or renting your data

4. Information Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties.

We share limited information only with:

Stripe (Payment Processing): To process subscription payments. Stripe has its own privacy policy governing how they handle payment information.

Service Providers: We may share limited information with trusted service providers who assist us in operating our Service (e.g., email service providers, hosting providers). These providers are contractually obligated to protect your information and use it only for the purposes we specify.

Legal Requirements: We may disclose information if required by law, court order, or governmental request, or to protect our rights, property, or safety.

Business Transfers: In the event of a merger, acquisition, or sale of assets, your information may be transferred. We will notify you via email and/or prominent notice on our website of any such change.

5. Data Security

We take security seriously:

- Encryption: All data transmitted between your browser and our servers uses industry-standard TLS encryption
- Local Storage Encryption: Data stored locally by the extension is encrypted using AES-256
- Secure Infrastructure: Our servers and databases employ security best practices including firewalls, access controls, and regular security audits
- Open Source: Our extension code is open source and publicly auditable, allowing security researchers to verify our privacy claims
- Third-Party Audits: We conduct regular security audits with independent security firms

6. Your Rights and Choices

You have the following rights:

Access: Request a copy of the personal information we hold about you
Correction: Update or correct your personal information
Deletion: Request deletion of your account and associated data
Export: Download your account data in a portable format
Opt-Out: Unsubscribe from marketing emails (we send very few)
Extension Removal: Uninstall the extension at any time, which will remove all locally stored data

To exercise these rights, contact us at bartzalewskidev@gmail.com.

For EU residents, you have additional rights under GDPR, including the right to lodge a complaint with a supervisory authority.

7. Data Retention

- Account Data: Retained while your account is active and for up to 90 days after account deletion (for recovery purposes)
- Payment Records: Retained as required by law for tax and accounting purposes (typically 7 years)
- Support Communications: Retained for up to 3 years
- Local Extension Data: Remains on your device until you uninstall the extension or clear your browser data

8. Children's Privacy

BlockNegativism is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us immediately at bartzalewskidev@gmail.com, and we will delete such information.

9. International Data Transfers

Our servers are located in the United States. If you use our Service from outside the U.S., your information may be transferred to and processed in the U.S., where data protection laws may differ from your jurisdiction.

10. Third-Party Links and Services

Our website may contain links to third-party websites or services (e.g., browser extension stores). We are not responsible for the privacy practices of these third parties. We encourage you to review their privacy policies.

11. Browser Permissions

The BlockNegativism extension requests certain browser permissions to function:

- Read and modify webpage content: Required to analyze and filter text on pages you visit. All processing happens locally.
- Storage: To save your preferences and settings locally on your device
- Active Tab: To apply filtering to the pages you're viewing

These permissions are used solely for the extension's core functionality. We do not use them to collect or transmit your browsing data.

12. Do Not Track

Some browsers include a "Do Not Track" (DNT) signal. Because there is no common understanding of how to interpret DNT signals, we do not currently respond to DNT signals. However, our extension does not track your browsing regardless of DNT settings.

13. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated "Last Updated" date. For material changes, we will notify you via email (for account holders) or through a prominent notice in the extension or on our website.

We encourage you to review this Privacy Policy periodically.

14. Contact Information

If you have questions, concerns, or requests related to this Privacy Policy or our privacy practices:

Email: bartzalewskidev@gmail.com

For data protection inquiries: bartzalewskidev@gmail.com

We will respond to all requests within 30 days.

15. Open Source Verification

Our extension code is open source and available for public review. Security researchers and privacy advocates are encouraged to audit our code to verify our privacy claims. Visit our GitHub repository at https://github.com/blocknegativism for the source code.

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By using BlockNegativism, you acknowledge that you have read and understood this Privacy Policy and agree to its terms.