Cookies are short text files which are saved on your computer. They contain information about which sites you visit on the internet. No personal data is saved in our cookies and they cannot contain harmful viruses.
If you do not want to accept cookies you can set up your browser to automatically reject cookies or to warn you every time a website wants to save cookies on your computer. Use your browser's ‘Help’ function to learn more.
Follow this guide: http://www.allaboutcookies.org/manage-cookies.