In the artificial immune based intrusion detection systems, mature detectors complete the tolerance and generation process mainly by negative selection algorithm currently.

目前在基于人工免疫的入侵检测系统中，成熟检测器的耐受和生成过程主要采用否定选择算法实现。

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This paper first analyses the characteristic of the host -based and network -based intrusion detection systems, then presents an audit system for electronic commerce system.

该文在分析基于主机和基于网络的入侵检测系统的特点的基础上，提出了一种电子商务安全审计系统的设计。

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Useful information could be abstracted from audit log of computers by most of host-based intrusion detection systems. Therefore, audit system become a target to be compromised by hackers or attackers.

审计日志是多种入侵检测系统的重要信息来源，因而审计系统就成为黑客或攻击者对付的主要目标。

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In general, the signature-based security products used to defend enterprise networks, such as firewalls, anti-virus products and intrusion detection systems are increasingly blind to modern attack methods, which are increasingly embedded into application data or designed to self-mutate in order to evade detection.

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Imagine if the problem had been first identified in November via a process to audit related systems based on the one reported intrusion into the internal chat application, or if an intrusion detection system had started firing red based on the exfiltration of their entire MySQL database.

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