security advisories used forum taxonomy term 44 (contrib) and 1852 (core). Forum terms use taxonomy_forums= instead of taxonomy_term_1=tid:</p>
<p><code class="language-php">https://www.drupal.org/api-d7/node.json?taxonomy_forums=44</code></p>
<p><code class="language-php">https://www.drupal.org/api-d7/node.json?taxonomy_forums=1852</code></p>
<p>There is also a taxonomy term 1856 for Security public service announcements. These are sometimes used to announce upcoming highly critical releases:</p>
<p><code 