I suspect we all have. The question is rather: how much would it have cost to prevent that mistake? The flip side is the insurance argument: given a big enough

I suspect we all have. The question is rather: how much would it have cost to prevent that mistake? The flip side is the insurance argument: given a big enough organisation, a mistake like that will happen, even if the probability of each individual mistake is very low. So assuming one of these will happen, what can you do to reduce the impact or to reduce the latency of fixing such a mistake?