更妙的是，这一系统已经证明其在抵御攻击方面比其他类型的验证码具有更加卓越的性能。

Even better, the system has proved to be far better at resisting attacks than other types of CAPTCHA.

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指令表随机化(isr)技术是一种新型的保护系统免遭任何类型注入码攻击的通用方法。

ISR (Instruction Set Randomization) is a new, general approach for safeguarding systems against any type of code-injection attack.

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