First is the security of mobile agent system, especially the malicious host problem; Second is the fair exchange problem in electronic commerce.

首先是移动代理系统的安全问题，特别是恶意主机问题；其次是电子商务中的公平交易问题。

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Simply put, severely compromised host environments, the emergence of a mobile, socially networked world and cloud computing have created a set of security requirements that can only be met by solving the malicious host problem.

FORBES: Written by David Lowenstein and Risu Na