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Most of the current security systems do not provide adequate level of protection against ever-increasing threats. The main reason for their failure is the use of point solutions to protect hosts and reactive approach against intrusions. The paper studied human immune system, which survives under dynamic changing conditions and provides protection against biological viruses and bacteria. By taking immune system as an analogy, the paper proposes an end-to-end network security system using mobile agents. The solution not only overcomes limitations of traditional security solutions, but also enhances overall security by providing protection at each stage of the attack timeline. It functions in proactive and also reactive manner and has ability to learn and improve its strategies, equivalent to what human immune system does against viruses and bacteria.
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