A website can only read a cookie it has created itself. In many cases, cookies are needed for fundamental functions on a website, such as making sure that a choice you have made on one page remains in effect when you progress to the next one. Cookies cannot cause any damage.
In principle, there are two types of cookies:
- Session cookies, which are stored temporarily on your computer during the time you remain on the website. They disappear as soon as you close your browser.
- Cookies that are stored on your computer for longer, up to a predefined expiry date. These are sometimes called long-term cookies.