IBM/Ponemon Institute report 2016 Cost of a Data Breach Study. The average cost of a breach for U.S. organizations rose to $7 million, an increase of 23% since 2013. Half of all the recorded breaches were the result of malicious or bad actor attacks. Careless staff (23%) and problems with IT and business systems (27%) made up the remainder, averaging costs per record of $197 and $213. When a breach went undetected for 100 days or more, average costs jumped to $8.01 million.”]
Source: https://www.csoonline.com/article/3110609/what-it-s-worth-cost-breakdown-of-a-breach.html