Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/19419#discussion_r144816893
--- Diff: docs/security.md ---
@@ -186,7 +186,54 @@ configure those ports.
</tr>
</table>
+### HTTP Security Headers
+
+Apache Spark can be configured to include HTTP Headers which aids in
preventing Cross
+Site Scripting (XSS), Cross-Frame Scripting (XFS), MIME-Sniffing and also
enforces HTTP
+Strict Transport Security.
+
+<table class="table">
+<tr><th>Property Name</th><th>Default</th><th>Meaning</th></tr>
+<tr>
+ <td><code>spark.ui.xXssProtection</code></td>
+ <td>None</td>
+ <td>
+ Value for HTTP X-XSS-Protection response header. You can choose
appropriate value
+ from below:
+ <ul>
+ <li> 0 </li> (Disables XSS filtering)
--- End diff --
Now you have text outside the list item. This won't render correctly. This
should be for example:
```
<li><code>0</code> (Disables XSS filtering)</li>
```
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