Hacking has been a part of computing for almost five decades and it is a very broad discipline, which covers a wide range of topics.
Hackers can be classified into different categories such as white hat, black hat, and grey hat, based on their intent of hacking a system.
White Hat Hackers
White Hat hackers are also known as Ethical Hackers. They never intent to harm a system, rather they try to find out weaknesses in a computer or a network system as a part of penetration testing and vulnerability assessments.
Ethical hacking is not illegal and it is one of the demanding jobs available in the IT industry. There are numerous companies that hire ethical hackers for penetration testing and vulnerability assessments.
Black Hat Hackers
Black Hat hackers, also known as crackers, are those who hack in order to gain unauthorized access to a system and harm its operations or steal sensitive information.
Black Hat hacking is always illegal because of its bad intent which includes stealing corporate data, violating privacy, damaging the system, blocking network communication, etc.
Grey Hat Hackers
Grey hat hackers are a blend of both black hat and white hat hackers. They act without malicious intent but for their fun, they exploit a security weakness in a computer system or network without the owner’s permission or knowledge.
Their intent is to bring the weakness to the attention of the owners and getting appreciation or a little bounty from the owners.
- SQL injection
- Password guessing and cracking
- Session hijacking
- Session spoofing
- Network traffic sniffing
- Denial of Service attacks
- Exploiting buffer overflow vulnerabilities