As you probably know that there has been an outage on roughly 400 customer sites since April 4th, 20:12 UTC. Sri Viswanath, Atlassian CTO has released a post about this as well. #Atlassian #Outage
What he is saying in this post is that they were supposed to delete the legacy Insight app on customer sites where it was installed but due to a faulty script 400 customer sites were deleted by mistake.