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  1. Hi All I'm on page 41 (in Security Fundamentals). Referring to: "For sensitive data being stored, but not stored in a database, change your sessions directory, and use the Web root directory's parent folder (see Figure 2.5)." Could someone elaborate on what this means? I'm not sure what a sessions directory is. When it refers to "sessions", is it talking about session variables that we can create?... like if I wanted to store the logged-in users first name in $_SESSION['userFirstName']? Is temporarily storing potentially sensitive data in session variables not secure? I'm pretty new at this, so please use plenty of laymen terms Thank you so much.
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