"Cookies" are IT data, particularly text files, stored on users' end devices intended for using websites. These files allow recognition of the user's device and proper display of the website adapted to their individual preferences. Cookies typically contain the name of the website from which they originate, their storage duration on the end device, and a unique number.
Cookies are used to adapt the content of websites to user preferences and to optimize the use of websites. They are also used to create anonymous, aggregated statistics that help understand how users use websites, which enables improving their structure and content, excluding personal identification of users.
Two types of cookies are generally used – "session" and "persistent". The first are temporary files that remain on the user's device until logging out from the website or turning off the software (web browser). "Persistent" files remain on the user's device for the time specified in the cookie parameters or until they are manually deleted by the user.
Cookies used by partners of the website operator, including website users in particular, are subject to their own privacy policy.
A detailed breakdown of cookies can be distinguished based on:
| Type | Description |
| Necessary | Absolutely essential for proper website functioning or functionality that the user wants to use |
| Functional | Important for website operation:
|
| Business | Enable implementation of the business model on which the website is made available; blocking them will not cause unavailability of all website functionality but may reduce the level of service due to the inability to realize revenue subsidizing the website operation. This category includes, for example, advertising cookies. |
| Type | Description |
| Session cookies | Cookie placed for the duration of browser use (session), deleted after closing the browser |
| Persistent cookies | Not deleted after closing the browser and remains on the user's device for a specified time or without expiration date depending on the website owner's settings |
| Type | Description |
| First-party cookie | Cookie placed directly by the owner of the visited website |
| Third-party cookie | Cookie placed by external entities whose page components were called by the website owner |
Note: cookies may be called by the administrator using scripts, components located on partner servers, placed in another location – another country or even a completely different legal system. In the case of the website administrator calling website components from outside the administrator's system, other standard cookie policy rules may apply than the privacy/cookie policy of the website administrator.
| Type | Description |
| Website configuration | Enable setting functions and services on the website |
| Security and reliability | Enable authentication verification and website performance optimization |
| Authentication | Enable notification when the user is logged in, allowing the website to show appropriate information and functions |
| Session state | Enable saving information about how users use the website. They may concern the most frequently visited pages or possible error messages displayed on some pages. Cookies used to save the so-called "session state" help improve services and increase browsing comfort. |
| Processes | Enable smooth operation of the website itself and its available functions |
| Advertising | Enable displaying ads that are more interesting to users, while being more valuable to publishers and advertisers, personalize ads, may also be used to display ads outside website pages (domain) |
| Location | Enable adapting displayed information to user location |
| Analytics and research, audience measurement | Enable website owners to better understand their users' preferences and improve and develop products and services through analysis. Usually the website owner or research company anonymously collects information and processes data about trends without identifying personal data of individual users |
| Type | Description |
| Harmless | Includes cookies:
|
| Researching | Used for tracking users but do not include information allowing identification of specific user data |
Personal data collected using cookies may only be collected for the purpose of performing specific functions for the user. Such data is encrypted in a way that prevents access by unauthorized persons.
By default, web browsing software allows cookies to be placed on the end device. These settings can be changed to block automatic cookie handling in browser settings or to inform about each transfer to the user's device. Detailed information about the possibilities and methods of handling cookies is available in the software settings (web browser).
Restricting the use of cookies may affect some functionalities available on the website.