We can install reinforcements for strike boxes and long screws to join hardware with framing, thereby increasing resistance to kick-in.

http://energau.com/blog/item/7-anssi-certifica-y-da-una-clasificacion-al-conmutador-ethernet-industrial-scalance-xm408-8c?goto=google_news&start=370

Installing longer screws and strengthening strike boxes to connect hardware and framing can increase kick-in resistance.