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Software is the biggest problem in computer security today. Most organizations invest in security by buying and maintaining a firewall, but they go on to let anybody access multiple Internet-enabled applications through that firewall. These applications are often remotely exploitable, rendering the firewall impotent (not to mention the fact that the firewall is often a piece of fallible software itself). Real attackers exploit software.
Gary McGraw (Fri,) studied this question.
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