A browser cookie is a small piece of data sent from a website and stored on your computer while you are browsing that website. When the you return to the same website in the future, the data stored in the cookie can be retrieved by the website to notify the website of your previous activity. Cookies are a common method used by web servers to know whether you are logged in to an account on a specific website or not.
You can specify whether you want to accept cookies and from which websites.
Open Web ▸ Preferences ▸ Privacy.
Select whether you want to accept cookies from all websites, accept cookies only from websites which you have visited or to not accept any cookies.
You should normally use Only from sites you visit because this option allows you to log into your accounts on most websites while preventing websites that you have not visited from leaving cookies.
If you choose to Always accept cookies, then websites that you have not visited will be able to leave third party cookies. Third party cookies are often used by advertisers and social media websites to track your activity across websites and offer targeted content. Note that some websites, such as Outlook.com, use third party cookies to monitor whether you are logged in.
If you Never accept cookies, you may experience problems on some websites like logging into your accounts, saving your preferences or not being able add items to your shopping basket.
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