《计算机专业英语》电子教案_第10章.pptVIP

Computer English ;Key points:  useful terms and definitions of computer securityDifficult points:  distinguish between four kinds of computer security breaches;Requirements:;New Words Expressions: breach 破坏，缺口 involve 包含，涉及，也可不译 depositor 寄托者 vulnerability 弱点，攻击 perimeter 周围，周边 penetrate vt. 攻破，攻击 Exposure 曝光，揭露 threat n. 威胁，恐吓 asset 资产 interruption 中断，打断 interception 截取 modification 修改 fabricate v. 伪造 tamper v. 篡改 spurious adj. 假的 ; 10.1.1 入侵计算机的特点 Principle of Easiest Penetration. An intruder must be expected to use any available means of penetration. This will not necessarily be the most obvious means, nor will it necessarily be the one against which the most solid defense has been installed. 最容易攻破原理。入侵者必定要使用一种可以攻破的方法，这种方法既不可能是最常用的，也不可能是针对已经采取了最可靠的防范措施的方法。 This principle says that computer security specialists must consider all possible means of penetration, because strengthening one may just make another means more appealing to intruders. We now consider what these means of penetration are. 这一原理说明计算机安全专家必须考虑所有可能的攻击方法。由于你加强了某一方面，入侵者可能会想出另外的对付方法。我们现在就说明这些攻击的方法是什么。;10.1 Characteristics of Computer Intrusion and Kinds of Security Breaches;10.1.2 KINDS OF SECURITY BREACHES A human who exploits a vulnerability perpetrates an attack on the system. Threats to computing systems are circumstances that have the potential to cause loss or harm; human attacks are examples of threats, as are natural disasters, inadvertent human errors, and internal hardware or software flaws. Finally, a control is a protective measure-an action, a device, a procedure, or a technique-that reduces a vulnerability. 人可利用脆弱性对系统进行罪恶的攻击。对计算机系统的威胁是引起安全丧失或伤害的环境；人们的攻击是威胁的例子，如自然灾害，人们非故意错误和硬件或软件缺陷等。最后，控制是一种保护性措施——控制可以是一种动作，一个设备，一个过程或一种技术——减少了脆弱性。 ;10.1.2 KINDS OF SECURITY BREACHES The major assets of computing systems are hardware, software, and data. There are four kinds of threats to the security of a computing system: interruption, interception, modi