Internet cookies – what they are and how they affect online privacy

It’s nearly impossible to use the internet without being asked about cookies. A typical pop-up will offer to either “accept all” or “reject all”. Sometimes, there may be a third option, or a link to further tweak your preferences.

These pop-ups and banners are distracting, and your first reaction is likely to get them out of the way as soon as possible – perhaps by hitting that “accept all” button.

But what are cookies, exactly? Why are we constantly asked about them, and what happens when we accept or reject them? As you will see, each choice comes with implications for your online privacy.

What are cookies

Cookies are small files that web pages save to your device. They contain info meant to enhance the user experience, especially for frequently visited websites.

This can include remembering your login information and preferred news categories or text size. Or they can help shopping sites suggest items based on your browsing history. Advertisers can track your browsing behaviour through cookies to show targeted ads.

There are many types, but one way to categorise cookies is based on how long they stick around.

Session cookies are only created temporarily – to track items in your shopping cart, for example. Once a browser session is inactive for a period of time or...

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