A cookie is a small file of letters and numbers that we store on your browser or the hard drive of your computer.
Third-party cookies are cookies that are set by a site other than that of the Web site being visited by the user.
Cookies are designed used for authentication, monitoring of browsing sessions and storing information of users' activities for statistical or advertising purposes.
They are cookies that are used to browsing or provide a service requested by the user. They are not used for other purposes and are normally installed by the owner of the website.
Third-party cookies come from other websites' advertisements (such as pop-up or banner ads) on the website that you're viewing. Websites might use these cookies to track your web use for marketing purposes.
Read the full text on Simplified Arrangements to Provide Information and Obtain Consent Regarding Cookies - 8 may 2014
You can usually switch cookies off by adjusting your browser settings to stop it from accepting cookies. Learn how here.
For mobile devices:
To disable cookies external services you need to change their settings: