Introduction

The number of computer crimes and information security incidents continues to grow by leaps and bounds. Reports from the CERT Coordination Center (CERT/CC) at Carnegie Mellon University show this figure more than doubling each year, and projections for future years are only rising. Viruses and worms continue to take down organizations for days at a time. Approaches to securing systems and networks vary widely from industry to industry and organization to organization.

Security professionals continue to battle against external attackers, cyber terrorists, disgruntled employees, automated worms and viruses, and unfortunately, unknowing employees who mistakenly grant access to an attacker by falling prey to a social engineering attack. ...

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