Computer networks underpin modern communication and digital services, and network attacks can disrupt systems, expose sensitive information, and cause serious consequences for organisations and individuals. This unit introduces foundational and practical knowledge of network security principles and the mechanisms used to protect modern computer networks. You will explore common network attacks and the protocols and techniques used to secure both wired and wireless networks. Topics include cryptography fundamentals for network security, secure communication protocols, authentication and access control, and defensive mechanisms such as firewalls and intrusion detection systems, as well as attacks like denial‑of‑service. By the end of the unit, you will understand how security mechanisms operate within real‑world networks and how they are applied to mitigate security risks.
Minimum total expected workload to achieve the learning outcomes for this unit is 144 hours per semester typically comprising a mixture of scheduled online and face to face learning activities and independent study. Independent study may include associated reading and preparation for scheduled teaching activities.
Design and implement secure networked systems that defend against malicious activities.
Identify and examine the ethical and legal issues relating to the security of information and computer networks.
Explain and critically evaluate common security standards and protocols used in networked applications.
Apply and compare appropriate cryptographic techniques to secure network communications.
Analyse and evaluate networked environments for security threats, vulnerabilities, and risks, and recommend appropriate security improvements.
Identify and analyse security issues and attacks in wired and wireless networks.
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