Modeling Secure Systems
Because this book is about how to build systems with UML, this might be a good place to briefly discuss appropriate ways to model the security interests of an application. In general, the security of a software system is defined by the countermeasures it implements. Five fundamental countermeasures and one organizing countermeasure are common to most secure systems:
Access control: Limiting system functionality to specific users.
Authentication: Identifying someone who has access rights to the system. Related to authentication is identification, which is the attempt to determine a specific identity.
Audit: Logging system activity, especially the activity of a system's users.
Intrusion detection: Detecting unauthorized ...
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