Way back in 1999, the first edition of Hacking Exposed introduced many people to the ease with which computer networks and systems are broken into. Although there are still many today who are not enlightened to this reality, large numbers are beginning to understand the necessity for firewalls, secure operating system configuration, vendor patch maintenance, and many other previously arcane fundamentals of information system security.

Unfortunately, the rapid evolution brought about by the Internet has already pushed the goalposts far upfield. Firewalls, operating system security, and the latest patches can all be bypassed with a simple attack against a web application. Although these elements are still critical components of any ...

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