Privacy Policy

Last updated: October 04, 2026

1. Data Controller

The data controller for OpenMystery is:

2. Information We Collect

2.1 Information You Provide

  • Account information: Email address, display name, password (hashed)
  • Payment information: Transaction amount, payment status. We do not store full card numbers — card data is handled by our payment processor (see Section 5)
  • Problem submissions: Title, description, mathematical field, difficulty, LaTeX content
  • AI attempt records: Model name, solution text, analysis, timestamps
  • Community interactions: Comments, verifications, bookmarks
  • Support communications: Emails, tickets, feedback you send us

2.2 Information We Automatically Collect

  • Device & network: IP address, device type, operating system, browser type, timezone
  • Usage data: Pages visited, features used, operation logs, session duration
  • API logs: Request timestamps, error logs, performance data

3. How We Use Your Information

Purpose Legal Basis
Provide and maintain serviceContract performance
Billing and payment processingContract performance
Customer supportContract performance / Legitimate interest
Service notifications (verification, security, policy updates)Legitimate interest
Security and fraud preventionLegitimate interest
Product optimization and analyticsLegitimate interest
Legal complianceLegal obligation

We may aggregate or de-identify data for statistical analysis. Such data cannot be linked to individual users.

4. Cookies and Tracking

Type Purpose Can be disabled
Strictly necessaryMaintain login, core functionalityNo
FunctionalLanguage preferences, personalized settingsYes
AnalyticsAnonymous usage statistics, product optimizationYes

We use authentication tokens stored in your browser's local storage to maintain your login session. Essential session cookies may be used for CSRF protection.

5. Data Sharing and Disclosure

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

  • Service providers: Cloud computing, payment processing, customer support, analytics — under confidentiality agreements. Payment card data is processed by our PCI-DSS compliant payment processor Waffo Pancake and is never stored on our servers.
  • Business partners: If applicable, we will disclose the type of partnership and data scope.
  • Legal requirements: When required by law, court order, or legitimate government request.
  • Business transfers: In the event of a merger or acquisition, we will notify users in advance and ensure protection obligations continue.
  • With your consent: For any other purposes, only with your explicit prior consent.

6. Data Security

  • Transmission encryption: TLS/HTTPS
  • Storage security: Passwords are hashed; sensitive data is encrypted
  • Access control: Least-privilege principle; employees sign confidentiality agreements
  • Regular security audits and vulnerability scanning

If a security incident affecting your rights occurs, we will notify you and relevant regulators within 72 hours of discovery.

7. Data Retention

Data Type Retention Period Disposal
Account informationDuring active use; 90 days after account deletionSecure deletion or anonymization
Transaction recordsAs required by law (typically 7 years)Secure deletion or archival
Support records3 yearsSecure deletion
Security audit logs12 monthsSecure deletion

8. Your Data Rights

To exercise your rights, contact us at privacy@openmystery.org. We will respond within 30 calendar days.

Right Description
Right to be informedKnow what data we collect and how we use it
Right of accessReceive a copy of your personal data
Right to rectificationCorrect inaccurate or incomplete data
Right to erasureRequest deletion of your data under specific conditions
Right to restrict processingPause data processing under specific conditions
Right to data portabilityReceive your data in a machine-readable format
Right to objectObject to processing based on legitimate interest or marketing
Right to withdraw consentWithdraw consent for processing based on consent

If you believe we have not handled your data properly, you have the right to lodge a complaint with your local data protection authority.

9. International Data Transfers

Our servers and partners may be located in various countries. When data is transferred internationally, we ensure security through Standard Contractual Clauses (SCC), adequacy decisions, or other lawful transfer mechanisms.

10. Children's Privacy

This service is intended for users aged 13 and above. We do not knowingly collect information from children under 13. If you believe your child has provided us with personal information, contact us immediately at privacy@openmystery.org and we will promptly delete the data.

11. Third-Party Links

This service may contain links to third-party websites or integrate with third-party services. This policy applies only to data we directly collect. We are not responsible for third-party data practices; review their policies before use.

12. Policy Changes

We may update this Privacy Policy from time to time. For significant changes, we will notify you at least 15 days in advance via email or a notice on our website. The "Last updated" date at the top reflects the most recent revision. Continued use after changes constitutes acceptance.

13. Contact Us