Split privacy and security considerations

Author: mattgarrish

dpub-aria/index.html

@@ -4397,10 +4397,13 @@ <h3>Definition of Roles</h3>
       </section>
     </section>
     <section class="informative">
-      <h2>Privacy and Security Considerations</h2>
+      <h2>Security Considerations</h2>
 
       <p>This specification introduces no new security considerations.</p>
-
+    </section>
+    <section class="informative">
+      <h2>Privacy Considerations</h2>
+      
       <p>
         In accordance with <a href="https://w3ctag.github.io/design-principles/#do-not-expose-use-of-assistive-tech">Web Platform Design Principles</a>, this specification provides no programatic
         interface to determine if information is being used by assistive technologies. However, this specificaton does allow an author to present different information to users of assistive