Understanding cookies

What this post added

This post explains the fundamental workings of HTTP cookies, detailing how they are set by servers via `Set-Cookie` headers and sent back by browsers in `Cookie` headers. It elaborates on key cookie attributes such as `Domain`, `Path`, `Expires`, `Max-Age`, `Secure`, `HttpOnly`, and `SameSite`, explaining their roles in scope, lifespan, and security. The post also provides best practices for cookie security, including using `Secure` and `HttpOnly` attributes, setting `SameSite` appropriately to mitigate CSRF, limiting cookie lifespan, and avoiding sensitive data storage. Finally, it guides users on inspecting and debugging cookies using browser developer tools like Chrome's Developer Tools.