Simple, respectful and minimal data use.

Controller and contact

The controller of this website is Jakub Kwarciński. For privacy-related questions, contact jakubkwarcinski@gmail.com.

Hosting and technical logs

The website is hosted by Cyberfolks. Like most hosting providers, its servers may process technical data such as an IP address, browser information and request time to deliver the website, maintain security and diagnose errors. These logs are retained only for as long as necessary for those purposes.

Anti-spam protection (hashed IP addresses)

The Kalambeer game and its leaderboard use a simple rate-limiting mechanism to prevent spam and automated abuse when scores are submitted. For this purpose only, your IP address is turned into an irreversible hash (HMAC-SHA256 with a secret key and the current date, so it changes daily). The IP address itself is never stored and the hash cannot be reversed.

The hash only counts submissions within a short, roughly one-hour window and is not linked to leaderboard entries — saved scores contain only your chosen nickname and the result. Expired hashes are cleared automatically on the next submission, so they may persist a little longer during quiet periods. The legal basis is my legitimate interest in keeping the service secure and free of abuse (Article 6(1)(f) GDPR, Recital 49).

Email contact

If you write to me, I use the details in your message only to reply and continue the conversation. The legal basis is my legitimate interest in responding to enquiries.

YouTube videos

The Home Recording section embeds videos through YouTube’s privacy-enhanced domain, youtube-nocookie.com. YouTube may still receive technical information when the video player loads. Its processing is governed by Google’s Privacy Policy.

Your rights

You may request access to, correction or deletion of your personal data, or object to its processing. You may also lodge a complaint with the Polish data protection authority, UODO.