因此，面临日益飞速增长的网络信息，必须着眼于数据信息检索方面的研究。

So we must be with an eye to the research of Information retrieval (IR) in face of rapid improvement of Information.

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尽管总是可以删除数据，但一旦数据太多，检索额外的信息可能是一个痛苦的过程。

While you can always delete data, retrieving additional information can be a painful process once you have lots of it.

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然后，攻击者能够通过分析记录数据检索出凭证信息，比如说密码和凭证信息。

The attacker can then analyze the recorded data to retrieve confidential information, such as passwords and confidential messages.

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