This is the Wiki Logo with a "+" on a blue sphere to represent Extended Confirmed users on en.wiki
<p><a href="//commons.wikimedia.org/wiki/User:Terasail" title="User:Terasail">Terasail</a>
</p>
<a href="https://meta.wikimedia.org/wiki/User:Nohat" class="extiw" title="meta:User:Nohat">Nohat</a> &amp; concept by <a href="https://meta.wikimedia.org/wiki/User:Paullusmagnus" class="extiw" title="meta:User:Paullusmagnus">Paullusmagnus</a> (Wiki Logo)
CC BY-SA 3.0
<p><span class="int-own-work" lang="en">Own work</span>
</p>
Used: <a href="//commons.wikimedia.org/wiki/File:Wikipedia-logo-v2.svg" class="image"><img alt="Wikipedia-logo-v2.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/103px-Wikipedia-logo-v2.svg.png" decoding="async" width="103" height="94" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/155px-Wikipedia-logo-v2.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/206px-Wikipedia-logo-v2.svg.png 2x" data-file-width="103" data-file-height="94"></a>