This is a handy thing to look for when investigating a compromised system because attackers often delete logs to hide their tracks.

在遭到破坏的系统中查找相关内容时，这是非常有用的内容，因为攻击者通常会删除日志以隐藏他们的踪迹。

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For those who need an even more comprehensive way to cover their tracks, the "delete history" option will wipe away any evidence of a given phone call.

如果有人想要更全面的方案来隐藏自己的行踪，“删除历史”选项将把你接到的电话记录也删除。

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If you delete a file, Time Machine tracks that deletion.

如果你删除一个文件，时间机器将记录这删除的记录。

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Awareness Technologies, which offers a program called Laptop Cop, tracks exactly what a person in possession of a laptop is doing and allows customers to retrieve and delete data from the device remotely.

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