Cybersecurity, also known as computer security or IT security, is the field of protecting computer systems from a theft of information, damage of hardware, software, or data, the disruption of services through denial-of-service attacks or the misdirection of services through botnets. The field of cybersecurity is rapidly growing in importance as the world increasingly relies on the Internet and wireless networks, computer systems, smart devices, and the many other devices that make up the Internet of Things.