Cyber security' according to the Information Technology Act, 2000 means

A. A device and collection of devices, including input and output support devices and excluding calculations which are not programmable and capable of being used

B. Any electronic, magnetic, optical or other high speed data processing device or system which performs logical, arithmetic and memory functions by manipulation of electronic, magnetic or optical impulse

C. Protecting information, equipment, devices, computer, computer, computer resource, communication device and information stored therein from unauthorised access, use, disclosure, disruption, modification or destruction

D. Affixing with its grammatical variations and cognate expressions means adoption of any methodology or procedure by a person for the purpose of authenticating an electronic record

Answer: Option C