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2 Overview - CET 4663 Introduction to Computer Security...

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CET 4663 Introduction to Computer Security
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Topics Components of Computer Security Threats Requirements Goals Risk Analysis / Cost Benefit Summary
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In three words or less. .. Confidentiality Only those who should see can see Integrity Only those who should alter can alter Availability All who should be able to access can access
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Classes of Threats Disclosure Snooping Deception Modification, spoofing, etc. Disruption Modification / denial Usurpation Modification, spoofing
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Security is Holistic Physical Security Technological Security Application OS Network Policies and Procedures
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Candy Networks Hard and Crunchy on the outside Soft and Chewy on the inside Systems are built on layers of trust But we shouldn't always trust them
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Requirements Secrecy Integrity Availability Authenticity Non-repudiation Access control
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Goals Prevention Prevent attackers from violating security policies
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