What are cookies?
Cookies are small, often encrypted, text files, which are stored on your computer when you visit some websites. They are used to remember useful information which allows certain functionality within the website to work, for example remembering where you have reached within an order process, or if you've logged in to a site. Cookies can't harm your computer.
How long do cookies last?
Cookies last for different lengths of time depending on what they are used for.
Session cookies are temporary cookies and are only stored until you leave the website or when you close your web browser.
Persistent cookies last for a fixed period of time, defined within the cookie, and allow the website to recognise the device again when the user returns to that website on that device.
Cookies can be categorised by who sets the cookie and also by how the cookie will be used.
Who sets the cookie?
First party cookies – these are set by the website that you are visiting and can only be read by that website.
Third party cookies – these are set by an organisation other than owner of the website. This might be for the purposes of website measurement, being able to watch a video on the site or for the purposes of advertising.
How cookies are used?