An attack on a computer processing or communications network could cause $50 billion to $120 billion of economic damage, a loss ranking somewhere between those of Hurricanes Sandy and Katrina. Cybercrime alone costs nations more than $1 trillion globally, far more than the record $300 billion of damage due to natural disasters in 2017. Such an attack could shake confidence in the global financial services system, causing banks, businesses and consumers to be stymied, confused or panicked, which in turn could have a major negative impact on economic activity.”]
Source: https://hbr.org/2018/09/how-a-cyber-attack-could-cause-the-next-financial-crisis