Question

What are the differences and similarities between security, network security, and computer security in IT fields? Do the fields cover clearly delineated areas, or is there considerable overlap? Would you say that one of these areas is more technical than the other two?

Answer 1

Security is a very broader term in IT field where as other 2 are the parts of security which means other 2 are the subsets of security be it any physical or internal security.

Computer security, also known as cybersecurity or IT security, is the protection of information systems from theft or damage to the hardware, the software, and to the information on them, as well as from disruption or misdirection of the services they provide. It includes controlling physical access to the hardware, as well as protecting against harm that may come via network access, data and code injection, and due to malpractice by operators, whether intentional, accidental, or due to them being tricked into deviating from secure procedures.

Information security (also known as InfoSec) ensures that both physical and digital data is protected from unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction. Information security differs from cybersecurity in that InfoSec aims to keep data in any form secure, whereas cybersecurity protects only digital data. If your business is starting to develop a security program, information security is where you should first begin, as it is the foundation for data security.

Network security, a subset of computer security, aims to protect any data that is being sent through devices in your network to ensure that the information is not changed or intercepted. The role of network security is to protect the organization’s IT infrastructure from all types of cyber threats including:

• Viruses, worms and Trojan horses
• Zero-day attacks
• Hacker attacks
• Denial of service attacks
• Spyware and adware