WEBVTT

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What is a website cookie actually for?

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It is a small piece of data the browser can store and send.

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Understand the technical basics.
6 things to know about cookies.

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Cookies help remember state
Web requests need a way to carry information between visits.
Small data value · Browser storage · Later requests

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A session can use an identifier
The server can recognise an existing signed-in session.
Session identifier · Server-side checks · Sign-in state

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Preferences can be remembered
A service might save a language or display choice.
Language choice · Display preference · Return visit

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Some cookies support tracking
A cookie can help connect activity across requests.
Activity measurement · Identifier use · Privacy implications

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Cookie settings change behaviour
Lifetime, scope and security settings affect their behaviour.
Expiry settings · Site scope · Security attributes

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Review the actual purpose
A cookie list should explain what each service is using.
Cookie inventory · Purpose of each one · Review with your provider

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Your checklist
Cookies help remember state · A session can use an identifier · Preferences can be remembered · Some cookies support tracking · Cookie settings change behaviour · Review the actual purpose

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Ask what each cookie does on your website.
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