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It's like a sticky note a website leaves on your browser to remember you next time.

Definition

Small data files stored on your browser by websites to remember things like your login, preferences, or browsing activity.

In plain English It's like a sticky note a website leaves on your browser to remember you next time.

Why this matters

Why it matters: Some cookies are helpful, but many are used to track you across sites and build advertising profiles.

Example

Example: A cookie may keep you logged in to Gmail, or let advertisers show you products you searched for.