small security

Author: FedericoMilanesio

about.html

@@ -25,6 +25,9 @@
     <link rel="preload" href="/scripts/images.js" as="script">
     <link rel="preload" href="/scripts/url-manip.js" as="script">
     <link rel="preload" href="styles.css" as="style" />
+
+    <meta http-equiv="Cross-Origin-Opener-Policy" content="same-origin">
+    <meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self'">
 
     <link rel="icon" type="image/x-icon" href="/images/favicon.png">
     <link rel="stylesheet" href="styles.css">