Last updated: 2 November 2026
This page explains how data is used when you visit alessiosferro.dev. The site has no analytics, advertising, profiling tools or data collection forms.
1. Who is responsible
The data controller is Alessio Sferro, based in Palermo, Italy. For questions or requests about your data, email sferro.alessio@gmail.com.
2. Data used to serve the website
The hosting infrastructure may receive technical information needed to deliver pages and protect the site. This can include your IP address, the time and URL of a request, browser, operating system and diagnostic information. I do not use this information to profile visitors or track individual browsing behaviour.
The master’s course materials require a username and password. Your browser sends these credentials to the site to check access to restricted pages and downloads.
3. Why this data is used
Technical data is used to deliver requested pages, check access to restricted resources and prevent abuse and security problems. For website operation and security, the legal basis is the controller’s legitimate interest in providing a secure service under Article 6(1)(f) of the GDPR.
4. Hosting providers
The site is published through OpenAI Sites and delivered using Cloudflare. These providers process technical data needed to run and secure their services under their privacy notices and applicable agreements.
Fonts, stylesheets and JavaScript libraries are served by this site. The Buy Me a Coffee button loads an image from an external service, as explained below.
5. Cookies and browser preferences
The site does not set advertising or analytics cookies. The hosting infrastructure may use security cookies, including Cloudflare’s __cf_bm, which expires after 30 minutes of inactivity. See Cloudflare’s cookie documentation for details.
Your language preference is stored on your device using localStorage, under the key alessiosferro-language. It lets the site remember your preferred language and remains until you clear the site’s data. On the Masters page, your background-music preference is saved under masters-background-music, so the control remembers when you mute the soundtrack. This preference also stays on your device until you clear the site’s data. You can manage cookies and local storage in your browser settings.
6. How long data is kept
I do not keep a separate record of visits. Any technical logs follow the hosting providers’ retention policies and applicable agreements. The language preference stays in your browser until you clear the site’s data. How sign-in credentials are retained depends on your browser.
7. International data transfers
Providers may process data outside the European Economic Area. Where applicable, transfers must use the safeguards required by the GDPR, such as an adequacy decision or standard contractual clauses. Each provider’s privacy notice explains its own arrangements.
8. Support button and external links
The support section on the master’s materials page loads its button image from img.buymeacoffee.com. That service receives the technical details of the image request when it loads, even if you do not click the button. Read the Buy Me a Coffee Privacy Policy for more information.
Donations take place on Buy Me a Coffee or PayPal, depending on the link you choose. Those services handle payments and any details you enter on their pages. The site also links to LinkedIn, GitHub and other resources. When you follow a link, the destination service’s own privacy policy applies.
9. Your rights
Where the GDPR provides for it, you can request access to your data, correction, deletion, restriction of processing or data portability, and you can object to processing. Send requests to the email address above. You can also complain to the Italian Data Protection Authority.
10. Updates
I update this page when the site’s features, providers or data processing information change. The date at the top shows when it was last revised.