Cookies are small files that are sent to and stored in your computer by the websites you visit. Cookies are stored in your browser's file directory. Next time you visit the site, your browser will read the cookie and relay the information back to the website or element that originally set the cookie. To learn more about these technologies and how they work, please see e.g. allaboutcookies.org.
These cookies are essential for running our web sites and are the key to providing you a seamless experience. You can navigate uninterrupted e.g. by remembering language and country choices you've made and by preserving authentication to secure parts of the domain.
These cookies enable us to improve our websites by looking at how they are used. We do analytical profiling to understand e.g. unique users reading a particular article (to know what is popular) or if a video file was viewed or abandoned half way through. We also look at where content is accessed so we know how to arrange our sites for optimal user experience.
These cookies help make the content as personalized as possible, for example by showing you targeted banners and relevant recommendations. We examine what type of reference was used to reach our sites, e.g. an email campaign or a link from a referral site, so we can estimate the effectiveness of our promotions and advertising campaigns.
You can review the options available to manage cookies in your browser. The browser can be used to manage cookies relating to basic functions, site improvement, personalization and advertising. Different browsers use different ways to disable cookies, but they are usually found under a Tools or Options menu. You can also consult the browser's help menu. In addition to cookie management, browsers usually let you control files similar to cookies, for example Local Shared Objects, e.g. by enabling the browser's privacy mode.
It depends based on the type of cookies, Session cookies expire when you close the browser, Persistent cookies, including Local Shared Objects ("Flash cookies"), have typical expiration dates ranging from two months up to a couple of years.