In Mobile agent system, security issues are a major problem. Mobile agents are autonomous software entity when a mobile agent works in the host environment some security problem raises, it can suspend its execution in one host and resume its execution in another host. When mobile agent resume its execution, it can loss some of its important data. Mobile agent have their personal information like, internal code, state and password. Это и многое другое вы найдете в книге Security Issues,Aspects & Domain Based Security for Mobile Agents