Privacy Policy
Last updated: 8 August 2026
This Privacy Policy explains how Nodeflow Core (“we”, “us”) collects and uses personal data when you visit nodeflow-core.digital or contact us about Offline Address Book Tracker programs.
Data controller
Nodeflow Core, operating from Street: 210-1, Wolmunri, Paltan-myeon; City: Hwaseong-si; State/province/area: Gyeonggi-do; Phone number: +82-1-691-0163; Country calling code: +82; Country: Korea;
Contact: support@nodeflow-core.digital · +82-1-691-0163
Data we collect
We may collect: identity and contact data you submit via forms (name, email, optional topic, message); technical data such as browser type and approximate region from server logs; and cookie preference choices stored in your browser under a brand-prefixed key.
Purposes and legal bases
We process data to respond to inquiries, operate and secure the website, improve educational content, and meet legal obligations. Where required, we rely on consent (for non-essential cookies), contract steps at your request, or legitimate interests in running a secure educational site.
Retention
Contact messages are retained up to 24 months unless a longer period is required for an active enrollment dispute. Server logs are typically rotated within 90 days. Cookie consent records remain in localStorage until you clear site data.
Your rights
Depending on applicable law in Korea and your place of residence, you may request access, correction, deletion, restriction, or objection to certain processing, and you may withdraw consent for optional cookies. Contact support@nodeflow-core.digital to exercise rights. You may also lodge a complaint with a competent supervisory authority.
International transfers
Our primary operations are in Korea. If hosting or email providers process data in other countries, we take reasonable contractual and technical steps appropriate to the transfer. By using the site from abroad, you understand that your information may be processed in Korea.
Sharing
We do not sell personal data. We may share data with service providers who host the site or deliver email, and when required by law.
Children
The site is directed to adults. We do not knowingly collect data from children under 16.
Cookies
See our Cookie Policy for details on essential and analytics cookies.
Updates
We may revise this Privacy Policy by posting changes on this page with an updated date.
Related: Terms of Service.