Simply put, ethical hacking is of paramount importance in finding and exploiting vulnerabilities in various systems for legitimate purposes. A similar role to a penetration tester, ethical hackers break into systems legally and ethically, with the difference being the legality of their processes and work, compared against ‘black hat’ hackers.
Information found by an ethical hacker is then used by the organisation to improve the system security, in an effort to minimise and eliminate any potential attacks.