Intrusion Prevention and Detection Systems
Christopher Day, Terremark Worldwide, Inc.
1 What is an ‘Intrusion’ Anyway?
Information security concerns itself with the confidentiality, integrity and availability of information systems and the information or data they contain and process. An ‘intrusion’ then is any action taken by an adversary that has a negative impact on the confidentiality, integrity, or availability of that information. Given such a broad definition of ‘intrusion’ it is instructive to examine a number of commonly occurring classes of information system (IS) intrusions.
2 Physical Theft
Having physical access to a computer system allows an adversary to bypass most security protections put in place to prevent unauthorized ...
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