No doubt, the usages of mobile agent and mobile phone technologies are rapidly increased. The mobile agent has a promising room in the industry area. Unfortunately, this technology faces some security problems from mobile agents and hosts sides. This paper proposes a new model to protect Hosts (Service Providers) from malicious mobile agents. The main idea behind the model is to generate a secure mobile agent by using Short Message Service (SMS). The model guarantees that generated mobile agents are secured because the generation is completely isolated from mobile agents owners and no way to add any kind of malicious code in the mobile agents. The model defines a new format as language to be used in writing SMS called Mobile Agent Description Language. In addition, the link of the mobile agent system with mobile phone will spread the culture of using mobile computation.
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