A red padlock icon for the ambox template.
<a href="//commons.wikimedia.org/w/index.php?title=Template:UIHuBoro&amp;action=edit&amp;redlink=1" class="new" title="Template:UIHuBoro (page does not exist)">Template:UIHuBoro</a>
CC BY-SA 4.0
Combined by me from <a href="//commons.wikimedia.org/wiki/File:Emblem-readonly.svg" title="File:Emblem-readonly.svg">File:Emblem-readonly.svg</a> and <a href="//commons.wikimedia.org/wiki/File:Deletion_icon.svg" title="File:Deletion icon.svg">File:Deletion icon.svg</a>