Adding to the above, as is said in http://codex.ww.wp.xz.cn/Hardening_WordPress keep your plugins and themes up to date, use hard passwords, avoid using the admin username, etc…
@fuzzyfreak
It is strange that they mention a script file and then link an image, but they could have gotten it wrong and linked the wrong file.
Its good to have security plugin, but I’d also recommend just checking and securing obvious areas, like making sure your theme and all plugins are updated, changing passwords, etc.
Hope this helps
