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The purpose of password cracking might be to help a user recover a forgotten password (due to the fact that installing an entirely new password would involve System Administration privileges), to gain unauthorized access to a system, or to act as a preventive measure whereby system administrators check for easily crackable passwords. On a file ...
Hydra works by using different approaches, such as brute-force attacks and dictionary attacks, in order to guess the right username and password combination. Hydra is commonly used by penetration testers together with a set of programmes like crunch, [ 3 ] cupp [ 4 ] etc, which are used to generate wordlists based on user-defined patterns.
The Worst Passwords List is an annual list of the 25 most common passwords from each year as produced by internet security firm SplashData. [3] Since 2011, the firm has published the list based on data examined from millions of passwords leaked in data breaches, mostly in North America and Western Europe, over each year.
The passwords may then be tried against any online account that can be linked to the first, to test for passwords reused on other sites. This particular list originates from the OWASP SecLists Project ( [1] ) and is copied from its content on GitHub ( [2] ) for convenient linking from Wikipedia.
One of the modes John can use is the dictionary attack. [6] It takes text string samples (usually from a file, called a wordlist, containing words found in a dictionary or real passwords cracked before), encrypting it in the same format as the password being examined (including both the encryption algorithm and key), and comparing the output to the encrypted string.
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When password-guessing, this method is very fast when used to check all short passwords, but for longer passwords other methods such as the dictionary attack are used because a brute-force search takes too long. Longer passwords, passphrases and keys have more possible values, making them exponentially more difficult to crack than shorter ones ...
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