Fecha de publicación: 28/02/2020 Fuente: Wipo "BigData" The present invention relates to a computer implemented method for detecting abnormalities in a computer network security using a big data analysis. The objective of the present invention is to overcomes the adequacies of the prior art in data security relates concerns of the computer network. The computer implemented method comprising steps of determining the computer network related security parameters including flow and intelligent information of data, performing a pretreatment and post treatment of the obtained security parameters using analysis flow analysis of large data among nodes of the network, and monitoring the security of the network using real-time security situation sensing and big data correlation analysis with detecting possible threat and suspect transmission & activity of data in network. .