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Advanced persistent threats (APTs) pose a grave threat to cyberspace, because they deactivate all the conventional cyber defense mechanisms. This paper addresses the issue of evaluating the security of the cyber networks under APTs. For this purpose, a dynamic model capturing the APT-based cyber-attack-defense processes is proposed. Theoretical analysis shows that this model admits a globally stable...
This paper addresses generation of delayed chaotic neuron with an axisymmetric activation function. The mathematical model of the proposed system with piecewise-linear (PWL) function is described. An electronic circuitry implementation of this system is also considered in detail. Notably, the proposed PWL circuit unit can also be used as an activation function unit in different systems, such as the...
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