IBM’s annual cost-of-a data-breach study shows that security system complexity and incident response testing are two factors that have the biggest impact on the total cost of a breach. Healthcare organizations globally once again shelled out more on average for a data breach than organizations in any other sector. The average breach cost in the US as usual was more than twice that, at $8.64 million on average. The attack vector, the type of data compromised, and the length of time it took for an organization to detect a breach, all had a substantial bearing on the final breach cost.”]
Source: https://www.darkreading.com/attacks-breaches/average-cost-of-a-data-breach-3-86-million