Link: Worldwide Spending on Security Solutions Forecast to Reach $91 Billion in 2018, According to a New IDC Spending Guide

“Worldwide spending on security-related hardware, software, and services is forecast to reach $91.4 billion in 2018, an increase of 10.2% over the amount spent in 2017.” Also, a breakdown of spending per industry and type of security product.
Original source: Worldwide Spending on Security Solutions Forecast to Reach $91 Billion in 2018, According to a New IDC Spending Guide