Password Cracker
A password cracker is a piece of software that a cracker will use to gain unathorized access to a computer or a network. These types of programs will use a dictionary to attempt automated logon attempts to a system. They have a good success rate against weak passwords as they will repeatedly try untill either they have no words left in their dictionary file or they have cracked the password. This is known as a brute force attack and is very simple as all it envolves is running a piece of software.
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