Firstly, some key technologies correlated with security are discussed in detail, such as data interception, data encryption, key management, etc.

首先详细讨论了与安全技术相关的一系列关键技术，包括数据拦截技术、数据加密技术、密钥管理技术等。

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Network interception and analysis is one of the important ways used in network security.

网络侦听是网络安全和网络管理中的重要技术。

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Mr Campbell alleged that national security agencies were using several major US corporations to aid their interception of data capabilities.

BBC: US spy system under attack

For security purposes, telecom providers have to agree to let the government have lawful interception access to their networks in India.

CNN: BlackBerry facing woes in India's booming market