Who is a hacker ? A hacker is an individual who possesses advanced computer and technology skills and uses them to explore, manipulate, and gain unauthorized access to computer systems, networks, and data. The term "hacker" has evolved over time and can have different meanings depending on the context: 1. Ethical Hacker: Also known as a "white hat" hacker, an ethical hacker is someone who uses their skills to identify vulnerabilities and weaknesses in computer systems or networks with the permission of the system owner. Their goal is to help secure and protect systems from potential malicious attacks. 2. Malicious Hacker: Often referred to as "black hat" hackers, these individuals use their technical expertise to exploit security vulnerabilities in computer systems and networks for illegal or malicious purposes. Their actions may include stealing sensitive information, causing disruption, or committing other cybercrimes. 3. Grey Hat Hacker: This term refers to individuals who fall somewhere between ethical and malicious hackers. Grey hat hackers may uncover vulnerabilities without authorization but do not necessarily exploit them for personal gain. Instead, they might inform the system owner or expose the flaws publicly to encourage better security practices. 4. Script Kiddie: A script kiddie is a derogatory term used to describe individuals with limited technical knowledge who use pre-existing hacking tools and scripts to carry out attacks without truly understanding the underlying principles. It's essential to note that the term "hacker" does not inherently imply illegal or malicious intent. Ethical hackers play a crucial role in maintaining cybersecurity by helping organizations identify and fix potential weaknesses, making systems more secure and resilient against real threats posed by malicious hackers.