I was making a cup of coffee, I pressed a button, and the machine caught on fire. We have to find the cause of the defect and take measures to prevent its recurrence.
Your versus plan is to attack back. They've already attacked you once, so now it's time for your counter plan.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.