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Building Web Applications with UML by Jim Conallen

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Chapter 5. Security

If you are building an Internet application, security is a concern. Even if you are building only an intranet application, one protected behind a company firewall, security should still be a concern. The term security describes the protection of our data and system. A secure system is a properly functioning software application that does only what it is supposed to do, without compromising the integrity of our data to those who are not authorized to have that information.

If our systems did only what they were supposed to do, security would not be an issue. So why is security a problem? Because our software and business processes often do things that we don't want or intend them to do. Unscrupulous individuals with even limited ...

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