In their volatile part of the planet, the sheikhs cannot buy perfect security.

在这颗行星上的动荡地区，酋长们无法用钱买到绝对安保。

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Finally the protocol is analyzed a nd some study on perfect security of the client is also given.

文中还给出了协议的分析，对完全解决客户端的安全也进行了探讨。

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Security technologies provide a high quality and perfect security operation system for multi-play services.

安全保障技术为多重业务提供高质量、完善的安全运营机制；

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Despite these burgeoning countermeasures there is, of course, no such thing as perfect security.

ECONOMIST: Forensic computing studies the anatomy of computer crime

Perfect security in cyberspace or in the real world has huge political and social costs, and most democratic societies would find it undesirable.

WSJ: Battling the Cyber Warmongers

The technique exploits the arcana of quantum mechanics to let two computers swap a cryptographic key (and thus the means to decode a message) with perfect security.

ECONOMIST: Optical communications