Because the Internet of Things (IoT) is creating its own ecosystem, the biggest challenge for the industry is how companies secure and manage the exponential growth of decentralized endpoint devices. Unfortunately, most security experts only know how to defend against attacks from a centralized perspective. Most Chief Information Security Officers (CISO) only understand centralized networks and depend on choke points or linear cyber kill chains that focus on traditional perimeter and inbound security protocols to defend against malware, viruses and other attacks that inevitably overwhelm networks and damage servers, devices and workstations.

Source: For Chief Information Security Officers Blockchain Will Improve Internet of Things (IoT) Security | Forbes