Gutendev undertakes to ensure that the collection and processing of data from the csstrain.com website comply with the General Data Protection Regulation (GDPR) and the Data Processing, Data Files and Individual Liberties Act.
A cookie is used to store your challenges answer, so you can see your past answers. However, this is only stored client-side and you are free to delete it anytime. No data is collected or stored on the backend.
Analytics data allow us to optimize the website. We use the tool called Piwik Pro. You are free to accept or refuse this cookie by selecting the right option when the Piwik consent banner shows.