There could be an estimated 2.3 billion connected devices in smart cities this year — a 42% increase since 2016. But the ubiquity of these devices is becoming a hacker's paradise, and smart cities could quickly become a security nightmare.
What they are: Smart cities "rely on interconnected devices to streamline and improve city services based on rich, real-time data," according to Harvard Business Review. That could be everything from sensors that reduce the energy used in street lights to devices that regulate the distribution of water.
The goal is to improve a city's livability and to utilize smart technologies to streamline its infrastructure.
The problem: These devices rely on real-time, accurate information, so if a hacker gets hold of their network, the entire city's programming could be thrown off. This has already happened: Hackers set off 158 emergency sirens throughout Dallas on April 8.