Privacy Policy

Updated May 8, 2025

Your privacy is important to us. This Privacy Policy explains how we handle your information in connection with "The Interactive Handbook on Data Structures and Algorithms." ("The Book"). By purchasing, accessing, or using The Book, you agree to the practices described in this policy.

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1. Who We Are

This Book is created and maintained by Elias Yilma ("I","we", "us", "our"). We are committed to protecting your privacy and complying with applicable data protection laws.

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2. What Data We Collect

We do not collect any personal information directly from you through our website or app. The only data associated with your purchase comes from the third-party platform through which you buy the book, such as Buy Me a Coffee. That platform may collect: Your name (if you provide it), Your email address, and Your billing information. This data is not stored or processed by us, except as provided by the platform to fulfill your purchase and send you book updates.

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3. How We Use Your Email Address

Your email address may be used solely for the purpose of sending you updates related to the book, such as new versions, corrections, or improvements. We do not use your email for marketing, sharing with third parties, or any unrelated communication.

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4. Third-Party Services

Purchases are processed via third-party platforms such as Buy Me a Coffee. Their privacy policies govern the handling of billing and payment data. We encourage you to review their privacy policies: Buy Me a Coffee Privacy Policy: https://www.buymeacoffee.com/privacy We do not have access to your full billing information and do not store any financial data ourselves.

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5. Data Security

We take reasonable steps to ensure any data we do receive (such as email addresses) is stored securely and used only for its intended purpose. We do not sell, rent, or share your information with third parties.

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6. Your Rights

Depending on your jurisdiction, you may have rights to: Request access to or deletion of your email address from our records Withdraw consent for receiving update notifications To exercise these rights, contact us at [your email address].

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7. Children’s Privacy

We do not knowingly collect or solicit personal data from anyone under 13 years of age. If you believe we have received such information, please contact us and we will promptly delete it.

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8. Policy Updates

We may update this Privacy Policy from time to time to reflect changes in how we handle your data or as required by law. When we do, we will update the “Last Updated” date at the top. Continued use of The Book after such changes means you accept the revised policy.

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9. Contact Us

If you have any questions about this Privacy Policy or how we handle your data, please contact us at: [email protected]