A cookie is a small data file sent by a website and saved on the user's computer by their web browser while they are browsing. Cookies serve as a reliable method for websites to remember status information (like items added to a shopping cart in an online store) or to log the user's browsing activities (such as clicking specific buttons, logging in, or noting which pages have been visited). They can also store information previously entered by the user into form fields, like names, addresses, passwords, and credit card details. Cookies are categorized as either session or persistent cookies. Session cookies are erased from your computer when you close your browser, whereas persistent cookies stay on your computer until you remove them or they expire. This feature enables websites to provide a personalized experience and is crucial for functionalities such as maintaining login status. Due to their role in tracking user behavior, cookies have sparked debates regarding privacy and security on the Internet, prompting regulations that require websites to obtain user consent before employing them.