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Password-protect your folders and files from being seen, read or modified. Random Password Generator Free. Create and manage secure and strong passwords. Cryptomator Free. Protect your documents from unauthorized access. User Reviews. Passwords are the most commonly used method for user authentication. However, passwords can also introduce security vulnerabilities. Password crackers are designed to take credential data stolen in a data breach or other hack and extract passwords from it.
This would make it far too easy for a hacker or a malicious insider to gain access to all of the user accounts on the system. Instead, authentication systems store a password hash, which is the result of sending the password — and a random value called a salt — through a hash function. Hash functions are designed to be one-way, meaning that it is very difficult to determine the input that produces a given output.
Since hash functions are also deterministic meaning that the same input produces the same output , comparing two password hashes the stored one and the hash of the password provided by a user is almost as good as comparing the real passwords.
Password cracking refers to the process of extracting passwords from the associated password hash. This can be accomplished in a few different ways:. Most password-cracking or password finder tools enable a hacker to perform any of these types of attacks. This post describes some of the most commonly used password-cracking tools. Hashcat is one of the most popular and widely used password crackers in existence.
It is available on every operating system and supports over different types of hashes. Hashcat enables highly-parallelized password cracking with the ability to crack multiple different passwords on multiple different devices at the same time and the ability to support a distributed hash-cracking system via overlays. Cracking is optimized with integrated performance tuning and temperature monitoring.
Download Hashcat here. A Windows version is also available. John the Ripper offers password cracking for a variety of different password types. A pro version of the tool is also available, which offers better features and native packages for target operating systems.
Download John the Ripper here. Brutus is one of the most popular remote online password-cracking tools. It claims to be the fastest and most flexible password cracking tool. This tool is free and is only available for Windows systems. It was released back in October Brutus supports a number of different authentication types, including:. It is also capable of supporting multi-stage authentication protocols and can attack up to sixty different targets in parallel.
It also offers the ability to pause, resume and import an attack. Brutus has not been updated for several years. However, its support for a wide variety of authentication protocols and ability to add custom modules make it a popular tool for online password cracking attacks.
Get the Brutus password finder online here. Wfuzz is a web application password-cracking tool like Brutus that tries to crack passwords via a brute-force guessing attack. It can also be used to find hidden resources like directories, servlets and scripts.
THC Hydra is an online password-cracking tool that attempts to determine user credentials via brute-force password guessing attack. THC Hydra is extensible with the ability to easily install new modules. Download THC Hydra here. Medusa is an online password-cracking tool similar to THC Hydra. It claims to be a speedy parallel, modular and login brute-forcing tool.
Medusa is a command-line tool, so some level of command-line knowledge is necessary to use it. Password-cracking speed depends on network connectivity. On a local system, it can test 2, passwords per minute. Medusa also supports parallelized attacks. In addition to a wordlist of passwords to try, it is also possible to define a list of usernames or email addresses to test during an attack. Read more about this here. Download Medusa here. All password-cracking is subject to a time-memory tradeoff.
This threat is why passwords are now salted: adding a unique, random value to every password before hashing it means that the number of rainbow tables required is much larger. RainbowCrack is a password cracking tool designed to work using rainbow tables. It is possible to generate custom rainbow tables or take advantage of preexisting ones downloaded from the internet. It had a higher strength number. There are a number of techniques that can be used to crack passwords.
We will describe the most commonly used ones below;. These are software programs that are used to crack user passwords. We already looked at a similar tool in the above example on password strengths. We will now look at some of the commonly used tools. John the Ripper uses the command prompt to crack passwords. This makes it suitable for advanced users who are comfortable working with commands. It uses to wordlist to crack passwords. The program is free, but the word list has to be bought.
It has free alternative word lists that you can use. It is used to recover passwords for user accounts, recovery of Microsoft Access passwords; networking sniffing, etc.
It is very common among newbies and script kiddies because of its simplicity of use. Ophcrack is a cross-platform Windows password cracker that uses rainbow tables to crack passwords.
It also has a module for brute force attacks among other features.
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