This report is based on data IBM collected between 1 January 2015 and 31 December 2015. The data has been normalized to account for differences in our clients’ infrastructures across industries and company size. The annual IBM® X-Force® Research Cyber Security Intelligence Index offers a high-level overview of the major threats to our clients’ businesses worldwide over the past year, and is complemented by other threat intelligence and research publications from IBM X-Force. Our goal is to help you better understand the current threat landscape by offering a detailed look at the volume of attacks, the industries most affected, the most prevalent types of attacks and attackers, and the key factors enabling them. We provide insights into where and how successful attacks can impact today’s technology-dependent organizations.