In simple terms, ethical hacking or penetration testing is that covers the intruding practices aiming to discover the cyber threats and cybersecurity vulnerabilities that can be exploited by a hacker. Such vulnerabilities can cost businesses and the government agencies their valuable data or and billions of dollars. That is why ethical hackers exist. They try to find weak spots and significant vulnerabilities of an organization’s security system before ill-intended hackers breach the security system.
If you are looking for an online course to learn Ethical Hacking, check out this CEH (v12)- Certified Ethical Hacker by Intellipaat.
Also, watch this video on Ethical Hacking to get started: