A penetration tester (pen-tester) is a white-hat hacker, responsible for protecting organizational security infrastructure from malicious hackers. Pen-testers imitate real-world attacks to perceive potential security loopholes for beaches, weaknesses in organizational structures and security systems, and defects in security policies and disciplines. The role of a pen-tester rotates around ensuring that the organization drives corrective, preventive, and protective actions to secure entire organizational systems before any efforts of malicious hackers. Penetration testers are needed to pretend attacks on the organization’s current security structures to determine the areas lacking the most attention. Moreover, they will take curative actions to make sound protection to the systems.