Intrusion detection system is the key technologies to protect network systems security and is important way of network security, being a hot area of research and development.

入侵检测系统是保护网络系统安全的关键技术和重要手段，是网络安全领域的研究热点。

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Systems administrators, network security specialists and help-desk technicians are still in demand, says Mr. Zion.

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"But a great deal of it concerns our most sensitive systems, including aircraft avionics, surveillance technologies, satellite communications systems, and network security protocols, " he said.

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Besides its main operations, which provide billing and other software to mobile telecommunications companies, Comverse owns 57% of Verint Systems, which provides network security services.

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