The transfer of confidential data over the Internet has become normality in the digital age with organizations and individuals using different digital platforms to share confidential information. This private information has become a target for hackers. With hackers targeting these networks, there has been a growing need to protect data, hardware, and software from vulnerabilities. A broad definition of network security can be constructed by defining its two components, security and networks. Two of the main focuses of this paper are to define network threats, such as phishing email, and to discuss some anti-phishing techniques. This research investigates various tools to identify different types of vulnerabilities and threats to the critical infrastructure and also identifies the network vulnerability and prevention methods for the network threats.
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