Privacy Policy
Last updated: September 26, 2026 · This policy is provided in English; it applies to all language versions of the service.
Who is responsible
Babala Özdemir, sole proprietorship (CHE-322.105.560), Switzerland · info@furyhack.com
What we store
- Account: name (optional), email address, hashed password, plan.
- Learning data: which lessons you completed, exam results, certificate code and date.
- Technical: server log files (IP address, time, page) for operating security. A cookie remembers your session and your chosen language.
Why
To provide the courses, remember your progress across devices and issue certificates. No advertising, no third-party tracking, no sale of data.
Processors
Our hosting provider (data centre in Germany, EU) and, for subscriptions bought in the app, Apple as the payment processor.
The SQL and Python labs
The labs run SQL (DuckDB-WASM) and Python with pandas (Pyodide) inside your browser or the app. Both runtimes are downloaded from the jsDelivr content delivery network (cdn.jsdelivr.net) when you open a lab; that server sees your IP address as any download does. Your code runs on your device. When you press “Check”, only the resulting values or rows are sent to our server — not your code and not the underlying dataset.
Your rights
Access, correction, deletion and data export. You can delete your account yourself under “Account”; progress and certificates are removed with it. Write to info@furyhack.com for anything else.
Security
Traffic is encrypted (HTTPS) and passwords are stored only as hashes.