Board Thread:General Discussion/@comment-79.46.179.244-20160915213849/@comment-26402117-20160919142948

I would be going to Wikipedia's adminstrator noticeboard - give them diffs of the original content addition on your wiki and the addition of the content to WP for comparision. There are definitely some editors on Wikipedia who don't understand WP:PLAG and WP:MIRROR applies to unattributed CC-BY-SA content. It would help to be civil with the admins - they will help get you attribution or remove mirror articles without DMCA.

That being said, Wikipedia's quite proactive about dealing with copied content.