罪犯利用技术手段躲过安全系统的几率非常小，小到FBI 都不会追踪这些数据。
The odds of a criminal using technical means to bypass a security system are so small that the FBI doesn't even track those statistics.
学习者行为追踪是对学习者与网络平台之间的互动过程进行数据采集、数据处理和数据分析的技术。
Learners activity tracing system is a technology that can collect, process and analyze data during the interaction between learners and the network platform.
同时数字水印技术的出现为数据加密与追踪提供了新的技术手段。
At same time, digital watermarking, coming forth as a new technology, provides a new measure for hiding and tracking of data.
数据包抽样标记技术是为了应对分布式拒绝服务攻击而提出的一种IP追踪技术。
Probabilistic Packet Marking for IP Traceback was proposed to defend against distributed denial-of-service attacks.
研究人员提出了各种各样的技术以期解决该问题，但是至今为止并没有一个系统能有效的追踪到某个特定数据包的源，也不能确定攻击者的物理位置。
Techniques have been developed to resolve the problem, but, to date, no system has been presented to trace individual packets in an efficient, scalable fashion, and can not locate the attacker either.
研究人员提出了各种各样的技术以期解决该问题，但是至今为止并没有一个系统能有效的追踪到某个特定数据包的源，也不能确定攻击者的物理位置。
Techniques have been developed to resolve the problem, but, to date, no system has been presented to trace individual packets in an efficient, scalable fashion, and can not locate the attacker either.
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