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A password cracking attack is either online or offline.

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So let's talk about this classification for a little bit.

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So there are a lot of password cracking tools out there and I'll list some of them here.

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Hydra is a command line online cracking tool.

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We'll put our hands on it in a few minutes.

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Cain and Abel is a password recovery tool for Microsoft operating systems.

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It allows easy recovery of various kinds of passwords by sniffing the network, cracking encrypted passwords,

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using dictionary, brute force and cryptanalysis attacks, recording VoIP conversations, decoding scrambled

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passwords, recovering wireless network keys, revealing password boxes, uncovering cached passwords

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and analyzing routing protocols.

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Does a lot.

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Huh?

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John the Ripper is a fast password cracker, currently available for many flavours of Unix, windows,

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dos and openvms.

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It's one of the most popular password testing and breaking programs as.

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It combines a number of password crackers into one package.

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Auto detects password hash types and includes a customizable cracker.

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Hashcat is another password recovery tool.

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The developers of the tools claim that it's the fastest password cracker in the whole world.

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It can basically use GPU as well as CPU where the GPU is.

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Well, let's face it, far more powerful in processing.

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So the off crack is a free windows password cracker based on rainbow tables.

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It's a very efficient implementation of rainbow tables done by the inventors of that method.

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It comes with a graphical user interface and runs on multiple platforms.