User blog comment:The Koromo/WTF/@comment-25428589-20150704170536/@comment-25428589-20150704171406

Oh, I've looked through the administrator's noticeboard there, and I know what happened.

A LUA module (which was unprotected and was used on a ton of pages - it's kinda like a template) was vandalised, someone added this code to it:.

Normally stuff like that is cleared up pretty quickly, but I'm guessing it was difficult for editors to work out which module/template was causing it.

If this tool is correct! only around 60 pages should have been affected.