PRIVACY POLICY

Publication: Hosam Zidan

Effective Date: November 25th, 2025

Publisher: Hosam Zidan (through hz-studio, Cairo, Egypt)

1. Introduction

This Privacy Policy explains how Hosam Zidan (”we,” “us,” or “our”) collects, uses, and discloses information from you when you access or use the Hosam Zidan Substack publication, which includes The System Assurance Brief (non-fiction) and The Simulation Log (fiction). We are committed to protecting your privacy.

2. Information We Collect

We primarily collect information you provide directly to us when you subscribe or interact with our content.

2.1 Personal Data You Provide:

• Email Address: Collected when you sign up for a free subscription to receive The System Assurance Brief or The Simulation Log.

• Name/Username: May be collected if you provide it during the subscription process or when commenting.

• Comments and Interactions: Data collected when you post comments, submit questions, or interact with polls/surveys.

2.2 Automatically Collected Data (Via Substack):

As the publication is hosted on Substack, Substack collects certain data automatically to operate and analyze the service. This may include:

• Usage Data: Information about how you access and read the publication (e.g., which posts you open, time spent reading, pages visited).

• Device Information: IP address, browser type, device type, and operating system.

3. How We Use Your Information

We use the information we collect for the following purposes:

• To Send Newsletters: To deliver the content you subscribed to (The System Assurance Brief and The Simulation Log).

• To Personalize Content: To analyze which topics (non-fiction vs. fiction) are most popular and tailor future content to your interests.

• To Manage Subscriptions: To administer your subscription, manage preferences (e.g., opting in/out of specific sections), and facilitate access to premium services.

• To Facilitate Communication: To respond to your comments and inquiries.

• Marketing and Sales: To promote related products, specifically the book Rethinking Sustainable Living and the HZ Studio Archive on Patreon.

4. Sharing Your Information

We do not sell your Personal Data. We share your information only in the following limited circumstances:

• Service Providers (Substack & Patreon): Your data is processed by Substack, which hosts the service, and may be shared with Patreon if you sign up for a paid tier (The HZ Studio Archive). These third parties adhere to their own privacy policies.

• Legal Requirements: If required to do so by law or in the good faith belief that such action is necessary to comply with a legal obligation, protect the rights or property of Hosam Zidan, or protect the safety of users or the public.

5. Third-Party Platforms (Substack & Patreon)

This publication is hosted by Substack. When you subscribe, your data is processed and stored on Substack’s servers, which is subject to Substack’s Privacy Policy.

If you sign up for a paid tier (e.g., The Analyst, The Archivist), your payment details and subscription management are handled by Patreon, and are subject to Patreon’s Privacy Policy. We do not directly store your payment information.

6. Your Data Rights

You have the following rights regarding the Personal Data we hold about you:

• Unsubscribe: You can unsubscribe from the publication at any time using the “unsubscribe” link at the bottom of any email.

• Manage Preferences: You can manage which specific sections (The System Assurance Brief or The Simulation Log) you receive via email in your Substack settings.

• Access and Correction: You can access and update your subscription information via your Substack account settings.

7. Contact Information

For any questions or concerns regarding this Privacy Policy, please contact the publisher at:

Website: books.hz-studio.net/contact

Publisher: Hosam Zidan, Architect (hz-studio, Cairo, Egypt)