汽车若遇到正面猛烈撞击，安全气囊可以保护驾车者。

Airbags protect the driver in the event of a severe frontal impact.

《牛津词典》

但若系统已遭遇安全威胁并被用于非法或未经授权的活动，又该怎么办呢？

But what do you do if a system has been compromised and used for illegal or unauthorized activities?

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