All that is required is the target person's cellphone number, a computer and some knowledge of how cellular networks work, said the report, which aimed to spotlight a security vulnerability.

报告称，所需的只是跟踪目标的手机号码，一台计算机和一些关于手机网络运行的知识。报告旨在曝光安全漏洞。

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Network is faced with various security threats, and it is important to effectively protect crucial data and to improve the security of computer networks.

通信网络面临多种多样的安全威胁，如何有效地保护重要数据信息、提高通信网络的安全性已经成为一个日益重要的迫切任务。

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As commerce and communication in the future continue to move to computer networks, security will become more and more vital.

未来商业和通讯将越来越多地使用计算机网络，因此，网络安全越来越重要。

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The program researched vulnerabilities in computer networks running critical infrastructure and sought ways to close security holes.

WSJ: U.S. Program to Detect Cyber Attacks on Infrastructure

Lead by example through making certain government computer systems and networks are secure and that the best information security measures are used.

CNN: Global panel issues Internet security recommendations

These products are used in telecommunications networks, computer-controlled systems, security systems, emergency lighting, electric utilities and switchgear, medical equipment, rail signaling, renewable energy, and military and aviation equipment.

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