Privacy Policy
Last Updated: 1st January 2026
1. Introduction
QuantumHarbor B.V. ("we", "us", "our") is committed to protecting and respecting your privacy. This Privacy Policy explains the data we collect from users of our marketplace platform, how we use your information, and your rights regarding your personal data. This policy applies to all users of the QuantumHarbor platform and website.
We are the data controller responsible for your personal data. Our contact information is provided in the contact section of this policy.
2. Data Collection
The data we collect depends on how you interact with our platform. We collect personal data that you provide directly to us, information about your use of our services, and data from third-party sources where permitted by law.
Information You Provide
- Account registration information (name, email address, phone number)
- Business information (company name, address, VAT number)
- Payment and billing information
- Product listings and descriptions
- Communications with us and other users
- Support requests and feedback
Information We Collect Automatically
- Device information (IP address, browser type, operating system)
- Usage data (pages visited, time spent, click patterns)
- Location information (where permitted)
- Cookies and similar tracking technologies
3. How We Use Your Information
We use of your data is based on legitimate interests, contractual necessity, legal obligations, or your consent. We use your personal information to provide, maintain, and improve our marketplace services.
Service Provision
- Creating and managing your account
- Processing transactions and payments
- Facilitating communication between buyers and sellers
- Providing customer support
- Ensuring platform security and preventing fraud
Platform Improvement
- Analysing usage patterns to improve our services
- Developing new features and functionality
- Personalising your experience
- Conducting research and analytics
Communication
- Sending important service updates and notifications
- Responding to your enquiries and support requests
- Marketing communications (with your consent)
- Legal and regulatory communications
4. Cookies and Tracking Technologies
We may use cookies and tracking technologies for analytics, advertising, and remarketing purposes, including Google Ads. These technologies help us measure campaign effectiveness, deliver relevant advertisements, and improve our services. You can manage your cookie preferences at any time through our cookie consent banner.
For detailed information about the cookies we use, please refer to our Cookie Policy.
5. Data Sharing and Disclosure
We do not sell your personal data to third parties. We may share your information in the following circumstances:
Service Providers
We work with trusted third-party service providers who help us operate our platform, including payment processors, hosting providers, and analytics services. These providers are contractually bound to protect your data.
Legal Requirements
We may disclose your information when required by law, to protect our rights, or to ensure the safety and security of our platform and users.
Business Transfers
In the event of a merger, acquisition, or sale of assets, your information may be transferred to the new entity, subject to the same privacy protections.
6. Data Retention
We retain your personal data for as long as necessary to provide our services, comply with legal obligations, resolve disputes, and enforce our agreements. The specific retention period depends on the type of data and the purpose for which it was collected.
Retention Periods
- Account Information: Retained while your account is active and for 7 years after closure for legal compliance
- Transaction Data: Retained for 7 years for accounting and legal purposes
- Marketing Data: Retained until you withdraw consent or for 3 years of inactivity
- Support Communications: Retained for 3 years for service improvement
7. Your Rights
Under the General Data Protection Regulation (GDPR) and other applicable data protection laws, you have several rights regarding your personal data:
- Right of Access: Request copies of your personal data
- Right to Rectification: Request correction of inaccurate or incomplete data
- Right to Erasure: Request deletion of your personal data in certain circumstances
- Right to Restrict Processing: Request limitation of how we use your data
- Right to Data Portability: Request transfer of your data in a structured format
- Right to Object: Object to processing based on legitimate interests or for marketing purposes
- Right to Withdraw Consent: Withdraw consent for processing where consent is the legal basis
To exercise any of these rights, please contact us using the information provided in the contact section below. We will respond to your request within one month.
8. Data Security
We implement appropriate technical and organisational measures to protect your personal data against unauthorised access, alteration, disclosure, or destruction. Our security measures include:
- Encryption of data in transit and at rest
- Regular security assessments and updates
- Access controls and authentication measures
- Staff training on data protection
- Incident response procedures
9. International Data Transfers
As a European-based company, we primarily process data within the European Economic Area (EEA). When we transfer data outside the EEA, we ensure appropriate safeguards are in place, such as Standard Contractual Clauses or adequacy decisions by the European Commission.
10. Children's Privacy
Our services are not intended for individuals under the age of 16. We do not knowingly collect personal data from children under 16. If we become aware that we have collected such data, we will take steps to delete it promptly.
11. Changes to This Policy
We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. We will notify you of any material changes by posting the updated policy on our website and, where appropriate, by email.
12. Contact Information
If you have any questions about this Privacy Policy, wish to exercise your rights, or need to contact us regarding data protection matters, please reach out to us:
Data Controller: QuantumHarbor B.V.
Address: Hoofdstraat 226, 9787 GJ Groningen, Netherlands
Privacy Email: privacy@quantumharbor.world
Phone: +31 503269071
Registration Number: NL76493852
You also have the right to lodge a complaint with a supervisory authority, particularly in the EU Member State where you reside, work, or where an alleged infringement of data protection law occurred.