在第四步中，定期地重新评估风险，因为新的风险、安全控制措施、基础设施技术和法律会影响安全状况。

In the fourth step, you periodically reassess risk assessment program as impacted by new risks, cost-effective security controls, emerging infrastructure technologies, and new legislations.

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其中许多挑战可以让企业的IT基础设施面临风险，所以确保尽可能最高级别的IT安全是至关紧要的。

Many of these challenges can put an enterprise's it infrastructure at risk, so ensuring the highest possible level of it security is crucial.

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有可能通过添加冗余基础设施组件来弥补性能缺陷，但这就有可能存在预算超支的风险，应该作为最不得已的方法考虑。

It is possible to add redundant infrastructure components to make up for a performance gap, but that runs the risk of exceeding the budget and should probably be the last step to consider.

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