This article outlined the key players and security attacks and defenses in an e-Commerce system.

本文概述了e - Commerce系统中的关键参与者，安全性攻击和防御。

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And both pose a particularly difficult strategic quandary: a hallmark of cyber and bio attacks is their ability to defy deterrence and elude defenses.

这也构成了一个难以解决的战略窘境：网络和生物袭击的特征就是，他们所具备的无视和躲避防御系统的能力。

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These defenses were designed against large scale threats, such as capital ship attacks, and were too ponderous to track fast-moving vessels such as Alliance starfighters.

这些防御武器被设计用来对抗大型目标的威胁，如主力舰的攻击，但它们过于笨重，无法咬住像同盟星际战斗机那样快速移动的飞船。

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Sendmail's new NT 3.0 product provides NT administrators with security features, like header scanning, relay access control, and better defenses against theoretical attacks, to which Unix and Linux system administrators are already accustomed.

CNN: Sendmail brings open source technology from Unix to NT

Every organization has a choice: They can become a victim of cyber attack and pay the cost of recovery, they can rely on quick reactions to changes in the threat space to ensure that they survive the next attack, or they can predict the next escalation in attacks and invest early in the defenses required to avoid ever becoming a victim.

FORBES: In Cyber, Losers Ignore, Survivors React, and Winners Predict

Obama's plan to shore up the government's defenses from cyber attacks and espionage, inherited from the Bush administration, has been careful to avoid regulations that might have been harmful to the private sector.

FORBES: Security