Comprehensive Privacy Policy

1. Introduction and Scope

At STL Hub, we respect your privacy and are committed to protecting your personal data. This Privacy Policy comprehensively describes how we collect, process, store, and protect user information, as well as our practices regarding integration with third-party platforms and APIs (such as Pinterest, Meta, TikTok, among others). This policy is designed to comply with international data protection standards (including GDPR and CCPA regulations).

2. Third-Party API and Social Media Integration

To optimize our operations and connect our 3D model catalog with the community, STL Hub uses third-party Application Programming Interfaces (APIs), including but not limited to Pinterest, Facebook (Meta), Instagram, and TikTok. Our integrations are governed by the following strict principles:

• Internal Automation: Applications connected to these social networks are used exclusively to manage, automate, and publish our own content (3D assets, renders, catalogs) on our official profiles.
• Zero Credential Access: STL Hub NEVER requests, collects, or stores passwords from users' personal social media accounts.
• No Data Selling: We do not share, sell, rent, or transfer any statistical, personal, or performance data obtained through these APIs to third parties.
• Access Tokens: Authentication tokens (OAuth) used to connect our official accounts with these platforms are stored using military-grade encryption and are not publicly accessible.

3. User Data Collection

To provide our STL file and 3D model download services, we collect the following strictly necessary information:

• Identification Data: Email address and username upon registration.
• Interaction Data: Download history, bookmarked models, clicks, and interactions within the platform to improve the recommendation algorithm.
• Technical Data: Anonymized IP address, browser type, and time zone for fraud prevention and basic statistical analysis.

4. Security and Data Retention

The security of your information is our priority. We employ robust encryption protocols (SSL/TLS) for data transmission and strong hashing algorithms (such as bcrypt) for password storage. We retain your personal information only for as long as necessary to fulfill the purposes outlined in this policy or to comply with legal obligations.

5. Your Rights

You have full control over your information. At any time you have the right to:

• Request access to the personal data we hold about you.
• Request the total rectification or deletion of your account and associated data.
• Opt-out of any promotional communications.

6. Policy Changes

We reserve the right to update this Privacy Policy to reflect changes in our practices or legal and third-party API requirements. Any significant changes will be visibly notified through our platform.

Legal Contact and Support

If you represent a third-party platform (Pinterest, Meta, etc.) reviewing our application, or if you are a user with questions about the handling of your data, you can contact us directly at our official administrative support email.