First party cookies
First party cookies are set by the website you are visiting and they can only be read by that site.
Third party cookies
Third party cookies are set by a different organisation to that of the website you are visiting. For example, the website might use a third party analytics company e.g. Google, who will set their own cookie to perform this service. The website you are visiting may also contain content embedded from other sites for example YouTube, Flickr or Facebook, which set their own cookies.
More significantly, a website might use a third party advertising network to deliver targeted advertising on their website. These may also have the capability to track your browsing across different sites.
Session Cookies are stored temporarily during a browsing session and are deleted from the user’s device when the browser is closed.
This type of cookie is saved on your computer for a fixed period (usually a year or longer) and is not deleted when the browser is closed. Persistent cookies are used where we need to know who you are for more than one browsing session. For example, this type of cookie is used to store your preferences or details e.g. your email address that you may have entered it in a form, so that they are remembered for your next visit.
Many websites use Adobe Flash Player to display video content to users. Adobe utilise their own cookies, which are not manageable through your browser settings but are used by the Flash Player for similar purposes, such as storing preferences or tracking users.
Flash Cookies work in a different way to web browser cookies (the cookie types listed above are all set via your browser); rather than having individual cookies for particular jobs, a website is restricted to storing all data in one cookie. You can control how much data can be stored in that cookie but you cannot choose what type of information is allowed to be stored.