Network security has become vital for securing sensitive and confidential information of organizations which is being shared and transferred across global networks. Various studies have explored different aspects of network security and have listed common threats and attacks that have been damaging the networks globally. The methodology adopted in this paper is a review of papers with keywords network security, network attacks and threats and network security measures. The aim of this paper is to critically review the studies on networking security, categorizing various attacks and threats and measures that need to be implemented for protection. The paper also describes various concepts related to security including network security, cryptography and encryption.

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