By Dan Gouré
Cybersecurity is the set of practices, processes and systems for protecting Information Technologies (IT), which consists of computers, networks, software and stored information, from digital attack. Cybersecurity has become a preoccupation for the government, private sector, institutions and individuals. Billions are spent annually to defend governmental, corporate, and personal IT from cyber intrusion. Innovative companies have developed new ways of providing security.
A major aspect of cybersecurity is the protection of critical infrastructure. The Department of Homeland Security defines critical infrastructure as “the physical and cyber systems and assets that are so vital to the United States that their incapacity or destruction would have a debilitating impact on our physical or economic security or public health or safety.” There are 16 critical infrastructure sectors, including energy, communications, food and agriculture, transportation, water and wastewater, nuclear power and materials, major manufacturing, and defense industries.
All these sectors are dependent on IT, not merely for communications or billing, but for the operation of major physical systems. Most of them employ IT-based supervisory control and data acquisition (SCADA) systems to monitor and operate a wide variety of hardware. For example, the energy sector is critically dependent on SCADA technology to manage the flow of power, direct the operation of production and storage facilities, and monitor the state of energy usage.
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