We collect information in our server logs from every visitor in order to ensure the security of our servers. These data are deleted after 4-5 weeks. The data we collect here include:
Your IP address
The date and time of your visit
The page that was visited
Your browser type/version
Mmmm, cookies 🍪
Cookies are used to track sessions. While we do not currently leverage this internally (even though PHP sometimes likes to set cookies anyway), we do use Google Analytics. This service is used to provide general information helping us to understand our visitors and what content they may enjoy. No personally identifying information is ever collected in this manner, it's always viewed in standard aggregate Google Analytics reports. Some of the stuff they track:
What site you were on before you came here
How long you hang out here
What kind of device and browser you are using
Your IP address and IP geolocation
And sometimes some general demographic data (viewable by us only in aggregate)