K1.24 Principles of network security and their application to prevent the unauthorised access, misuse,
modification or denial of a computer, information system or data:
• the CIA triad – confidentiality, integrity and availability applied to develop security
• identification, authentication, authorisation and accountability (IAAA) – applied to prevent
unauthorised access by implementing security policies to secure a network further:
o applying directory services
o security authentication process
o using passwords and security implications
o identification and protection of data
o maintaining an up-to-date information asset register
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