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Title: Security Concepts and User Group Management
Description: - Security Concepts - User management

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Delwin Thermitus
Cyber Security

Security Concepts & User Group Management

Security Concept 1

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Outline
o Background
o Three essential principles of security
o Categories of security
▪ Restrictions
▪ Simplicity
▪ Methodology
o Security in Linux

Background
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‘The protection of information in computer systems’
o There are 8 design principles
‘Principle of computer system design’
o Broader design principles’
‘A contemporary look at Saltzer and Schroeder’s 1975 design principle’
o Different slightly in terminology from previous 2
Cyber security curricula 2017

Three Essential Principle Of Security
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Least privilege
o Software should be given only those privileges that it needs to complete its task
...


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Open design
o Security of software, and of what that software provides should not depend on
the secrecy of its design or implementation
▪ No ‘security through obscurity’
▪ Most important for cryptographic processes
Title: Security Concepts and User Group Management
Description: - Security Concepts - User management