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The meaning of Hacker is one who accesses a computer which is supposably not able to be accessed to non

authorised people of the community. Hackers may use any type of system to access this information

depending on what they intend on doing in the system.



Methods



Hackers may use a variety of ways to hack into a system. First if the hacker is experienced and smart the

hacker will use telnet to access a shell on another machine so that the risk of getting caught is lower than

doing it using their own system.

Ways in which the hacker will break into the system are:



1) Guess/cracking passwords. This is where the hacker takes guesses at the password or has a crack

program to crack the password protecting the system.



2) Finding back doors is another way in which the hacker may get access to the system. This is where the

hacker tries to find flaws in the system they are trying to enter.



3) One other way in which a hacker may try to get into a system is by using a program called a WORM.

This program is specially programmed to suit the need of the user. This programme continually tries to

connect to a machine at over 100 times a second until eventually the system lets in and the worm executes

its program. The program could be anything from getting password files to deleting files depending on

what it has been programmed to do.



Protection



The only way that you or a company can stop a Hacker is by not having your computer connected to the

net. This is the only sure fire way in which you can stop a hacker entering your system. This is mainly

because hackers use a phone line to access the system. If it is possible for one...