1. Introduction
   This Privacy Policy explains how Check Crypto Address ("we," "our," or "the extension") collects, uses, and protects your personal information when you use our browser extension.

Key Points:

We prioritize your privacy and data security
We are transparent about data collection and usage
You maintain control over your personal information
Please read this policy carefully to understand how your data is handled
2. Information We Collect
Personal Information
When using our extension, we may collect:

Email address (when provided for API key registration)
IP addresses (from API requests for security and rate limiting)
Device information (browser type, version, and basic system info from HTTP headers)
Browser type and settings (for compatibility and optimization)
Service Usage Data
Cryptocurrency addresses validated (temporarily processed, not permanently stored)
API usage statistics (request counts, rate limit data)
Search queries (addresses you validate through the extension)
Extension interaction data (feature usage, settings preferences)
Technical Data
Log files (API request logs for debugging and security)
Error reports (crash reports and error diagnostics)
Performance data (response times, success rates)
Security events (suspicious activity detection, fraud prevention)
Data Collected Locally
API Keys: Optional API keys you provide are stored locally in your browser
Extension Settings: Your preferences for security settings, context menu options, and auto-clear history
Validation Cache: Recently validated addresses are cached locally for 5 minutes to improve performance
We collect only necessary information to provide and improve our services.

1. How We Use Your Data
   Service Operation
   Providing address validation services (syntax validation, risk assessment)
   Maintaining the scam database (threat intelligence and fraud detection)
   Processing API requests (handling validation requests and responses)
   Improving service accuracy (enhancing detection algorithms and data quality)
   Security & Protection
   Preventing fraud and abuse (detecting malicious usage patterns)
   Detecting suspicious activity (identifying potential threats and scams)
   Protecting user accounts (rate limiting and access control)
   Maintaining system security (monitoring for security breaches and attacks)
   Service Improvement
   Analyzing usage patterns (understanding how features are used)
   Enhancing user experience (optimizing interface and performance)
   Developing new features (adding capabilities based on user needs)
   Fixing bugs and issues (identifying and resolving technical problems)
   Marketing Communications
   Sending service updates and newsletters (important announcements and updates)
   Promotional offers and announcements (new features and special offers)
   Product recommendations (relevant security tools and services)
   Market research and surveys (gathering feedback for improvements)
   You can opt-out of marketing communications at any time through your account settings or by clicking the unsubscribe link in our emails.
2. Information Sharing
   We limit data sharing to essential service operations.

We Share With
Service providers and partners (cloud hosting, security services, payment processing)
Security and fraud prevention services (threat intelligence providers, abuse detection)
Analytics providers (performance monitoring, error tracking, usage analytics)
We Never Share
Personal information for marketing (no selling of user data to marketers)
User data with third-party advertisers (no advertising network data sharing)
Individual validation history (specific addresses you've validated remain private)
Legal Requirements
We may be required to share information in response to:

Court orders (legally binding judicial demands)
Legal obligations (compliance with applicable laws and regulations)
Law enforcement requests (valid requests from authorized agencies)
We may be required to share information in response to valid legal requests.

1. Cookie Policy
   Cookies help us provide and improve our services.

Essential Cookies
Authentication and security (API key validation, session management)
Session management (maintaining user state during validation)
Basic functionality (extension operation, feature availability)
User preferences (settings, customization options)
Analytics Cookies
Usage statistics (feature usage, performance metrics)
Performance monitoring (response times, error rates)
Service improvements (optimization data, user behavior)
Error tracking (crash reports, diagnostic information)
Third-Party Cookies
Security services (fraud detection, abuse prevention)
Analytics tools (usage analysis, performance monitoring)
Performance monitoring (uptime tracking, service health)
Disabling essential cookies may affect service functionality.

1. Data Security
   We implement industry-standard security measures.

Security Measures
End-to-end encryption (HTTPS for all API communications)
Regular security audits (vulnerability assessments, penetration testing)
Secure storage (browser's secure storage APIs for local data)
Access controls (API key authentication, rate limiting)
Protection Systems
Automated backups (data protection and recovery)
Incident response (security breach protocols)
Security compliance (industry standards and best practices)
Timeout protection (30-second API request timeouts)
While we maintain high security standards, no system is completely immune to security risks.

1. Your Rights
   You have control over your personal data.

Your Rights Include
Access your personal data (request copies of data we hold)
Request data correction (update inaccurate or incomplete information)
Request data deletion (remove your data from our systems)
Export your data (obtain data in portable format)
Withdraw consent (opt-out of data processing where consent-based)
How to Exercise Rights
Contact info@checkcryptoaddress.com (submit formal data requests)
Use extension settings (clear data, manage preferences)
Browser controls (view stored data, remove extension)
Extension-Specific Controls
Clear All Data: Use the "Clear All Extension Data" button in settings
Remove API Keys: Clear your API key at any time
Disable Features: Turn off context menus or other features
Auto-Clear History: Enable automatic clearing of validation history
Some requests may be limited by legal requirements or technical constraints.

1. Data Retention
   Retention Periods
   Account data: While active plus 365 days
   Usage logs: 180 days
   Security logs: 1 year
   Backup data: 60 days
   Validation cache: 5 minutes (automatic deletion)
   API keys: Until manually cleared by user
   Extension settings: Until extension data is cleared
   Data Deletion
   Automatic after retention period (no manual intervention required)
   On valid user request (within 30 days of request)
   When no longer needed (business purpose fulfilled)
   Some data may be retained longer for legal compliance. Deleted data cannot be recovered.
2. International Transfers
   Your data may be processed in different countries.

Transfer Safeguards
Standard contractual clauses (EU-approved data transfer mechanisms)
Data processing agreements (contractual protections with processors)
Privacy Shield compliance (where applicable)
Adequate jurisdiction transfers (to countries with adequate protection)
Protection Measures
Encryption in transit (secure data transmission)
Secure data centers (certified facilities with physical security)
Access controls (restricted data access on need-to-know basis)
Regular audits (compliance monitoring and verification)
Data protection laws may vary by jurisdiction.

1. Policy Updates
   We may update this policy periodically.

Update Notifications
Email notifications (for significant changes)
Website announcements (posted privacy policy updates)
Service notifications (in-app alerts for major changes)
Extension alerts (notification of policy updates)
Your Options
Review changes (compare new and previous versions)
Accept updates (continued use implies acceptance)
Contact with questions (reach out for clarification)
Update preferences (modify consent and settings)
Continued use after updates implies acceptance of changes.

Third-Party Services
External APIs
Blockchain Networks: We query public blockchain APIs for transaction data
Threat Intelligence: We use security databases to assess address risks
No Tracking: These services do not receive identifying information about you
Children's Privacy
This extension is not intended for children under 13. We do not knowingly collect personal information from children under 13.

Rate Limiting and Usage
API Limits
Free users: Limited daily requests
API key users: Higher rate limits based on plan
Rate limit information is displayed in the extension
No personal information is tied to rate limiting
Contact Information
If you have questions about this privacy policy or our privacy practices:

Website: https://checkcryptoaddress.com
Email: info@checkcryptoaddress.com
Issues: Report privacy concerns through our website contact form
Compliance
This extension and privacy policy comply with:

California Consumer Privacy Act (CCPA)
General Data Protection Regulation (GDPR)
Children's Online Privacy Protection Act (COPPA)
Chrome Web Store Developer Policies
Mozilla Add-ons Policies