Globalwat script inside footer.php after upgrade

could we get a link of the site with the problem to look at the source?

I removed the script from the blogs — here’s a copy:

[Mod Note – Script removed. Best not to propergate.]

that looks a lot like a hack to me:

https://codex.www.ads-software.com/FAQ_My_site_was_hacked
https://ocaoimh.ie/did-your-wordpress-site-get-hacked/
https://smackdown.blogsblogsblogs.com/2008/06/24/how-to-completely-clean-your-hacked-wordpress-installation/
https://www.snipe.net/2010/01/when-wordpress-gets-hacked/

My Experiences with being hacked:
https://www.rvoodoo.com/2010/02/the-dreaded-base64-wordpress-hack-and-other-hacks-too/

And when you’re done:
https://codex.www.ads-software.com/Hardening_WordPress