Persistent first-party cookies are best described as which?

• A. Cookies that are not erased when you leave. They allow the site to remember you, taking up very little space on your hard drive, and don't track you intrusively
• B. Cookies that are erased when you close the browser
• C. Third-party cookies used by advertisers
• D. Cookies that store login credentials in plaintext

Answer: (A)

Persistent first-party cookies are stored by the site you’re visiting and stay on your device after you close the browser. This lets the site remember you and your preferences across visits, which is why they’re described as not erased when you leave. They’re typically small in size and mainly keep things specific to that site, rather than tracking you across different sites. This contrasts with session cookies, which disappear when you close the browser, and with third-party cookies, which come from other sites and are often used for cross-site advertising. Storing login credentials in plaintext would be insecure and isn’t a defining feature of these cookies.