Sessiecookies

Sessiecookies, or session cookies, are a type of HTTP cookie that exists only for the duration of a browser session. They are created when a user visits a website and are used to maintain state across multiple pages within that session. Unlike persistent cookies, sessiecookies do not have a fixed expiration date and are typically deleted when the browser is closed or the session ends.

These cookies are commonly used to manage user sessions, such as keeping a user logged in while navigating a site, storing temporary data like a shopping cart, or holding a session token that authenticates requests during the session. They may also carry state information needed for the correct rendering of a page or for CSRF protection tokens, depending on the site’s design.

From a security perspective, sessiecookies should be treated with care. Best practices include marking cookies as HttpOnly to prevent access from client-side scripts, using Secure so cookies are only transmitted over HTTPS, and applying the SameSite attribute to mitigate cross-site request forgery. Because a page session can be hijacked if someone else obtains the session identifier, servers rely on proper transport security and session management to reduce risk.

In terms of privacy and regulation, sessiecookies are often considered essential for the technical functioning of a site, but their use can still require transparency under laws such as the EU’s GDPR. This typically involves informing users about cookie usage and, in some cases, obtaining consent for non-essential data collection.