Go here. https://ahrefs.com/backlink-checker
Search for his site: agario.tube (probably this)
It lists backlinks. Example backlink is from bostonchildrensmuseum.org
Go to google. Search "agario site:bostonchildrensmuseum.org"
tldr: he is hacking sites or paying someone to hack sites. likely exploiting wordpress vulnerabilities to insert hidden backlinks into thousands of websites.
Go to google. Search "agario site:bostonchildrensmuseum.org"
Takes you here: https://www.bostonchildrensmuseum.org/exhibits-programs/exhi...
Look at the html source: <marquee style="width: 0px; position: absolute"><a href="https://agarr.live/" title="agario">agario</a> - <a href="https://slither-2.io/" title="slitherio unblocked">slitherio unblocked</a> - <a href="https://diepio-2.com/" title="diep.io unblocked">diep.io unblocked</a> - <a href="https://agario.tube" title="agario unblocked">agario unblocked</a> - <a href="https://yohoho-io.live/" title="yohoho unblocked">yohoho unblocked</a> - <a href="https://yohoho.gold/" title="yohoho">yohoho</a> </marquee>
tldr: he is hacking sites or paying someone to hack sites. likely exploiting wordpress vulnerabilities to insert hidden backlinks into thousands of websites.