Cyber security is the practice of defending iot devices, computers, servers, mobile devices, electronic systems, networks, and data from cyber attacks. It's also known as information technology security or electronic information security. Ethical hacking involves an authorized attempt to gain unauthorized access to a computer system, application, or data. Carrying out an ethical hack involves duplicating strategies and actions of cyber attackers. This practice helps to identify security vulnerabilities which can then be resolved before a malicious attacker has the opportunity to exploit them.