Network security
It refers to the process of protecting computer networks and its infrastructure from unauthorized access, use, modification or destruction.
It involves various technologies, tools and techniques to safe guard networks and their data from range of threats, including hackers, malware, virus etc.
The primary goal of network security is to ensure
- Confidentiality
- Integrity
- Availability
Types of Computer Security
Physical Security
Refers to the physical protection of hardware, software, and data from unauthorized access, theft or damage. E.g. Security Guard, Access Control Systems, Video Surveillance and Fire Suppression systems.
Network Security
Refers to the protection of network infrastructure and communication system from unauthorized access, misuse or attack. E.g. Firewall, Intrusion Detection System, VPNs, etc.
Application Security
Focuses on protection of software application from external and internal threats, including malicious code, malware and hacking attacks. E.g. Secure Coding Practice, Software Testing, etc.
Information Security
Refers to the protection of data from unauthorized access, disclosure, alteration or destructions. E.g. encryption, access control, etc.