Who attacks on the security system of the computer are called the attackers or hackers, but one thing to remember that all the hackers are not bad or dangerous, some are used to protect hacking. It is true hacking is an illegal but to protect yourself is a legal.
Following are the some types of hackers:
1. Hacker: is a person who tries to gain the unauthorized access of the network security using their skills and hacking resources.
2. Cracker: mostly cracker break the security system and destroy the data rather than to gain the access. So crackers are more dangerous than hackers. Because they did not give any chance to recover and escape.
3. Ethical hacker: these are professional persons to give the protection from the hacking. These are not dangerous man that are hired by government, organizations etc. government give good salaries to these persons. These are also called white hat hackers.
4. Script kiddies: these attackers have not so much knowledge about the programming or networking, they just use the pre-written hacking programs/software to attack on the network security system.
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