Feature based three stage neural networks intrusion detection method and system A system and method for detecting a network intrusion is provided. The system comprises a first neural network (104) for determining a first plu-rality of weight values corresponding to a plurality of vectors of an input data. The system also includes a second neural network (106) for updating the first plurality of weight values received from the first neural network (104) to a second plurality of weight values based on the plurality of vectors of the input data. The system also has a third neural network (108) for updating the second plurality of weight values received from the second neural network (106) to a third plurality of weight values based on the plu-rality of vectors of the input data. The disclosed system further includes a classification module (110) for classifying the plurality of vectors under at least one of a plurality of intrusions based on the third plurality of weight values received from the third neural network (108). FIG 1
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