ABSTRACT
The preceding chapters have provided plenty of evidence that security in the age of Internet business is not to be taken lightly. Companies are exposed to all sorts of risks; from theft of confidential customer records from their supposedly secure database systems to viruses and the shutdown of revenue-critical applications. People experienced in databases and networks admit that the main contributor to low security and to privacy exposure is the complexity of existing business architectures and systems solutions. Also, enterprises may not have designed their IT systems top-down and bottom-up with security in mind. Network operating systems (OS), for example, have 30 million lines of code or more; they are connected to thousands of other OS just as complex.
