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Anti-Hacker Tool Kit, Fourth Edition by Mike Shema

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CHAPTER 15
PASSWORD CRACKING AND BRUTE-FORCE TOOLS
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A smile, a house key, a password. Whether you’re trying to get into a nightclub, your house, or your computer, you will need something that only you possess. Our passwords must be protected in transit (e.g., sent over encrypted channels) to prevent them from being sniffed or intercepted, protected in storage (i.e., hashed and salted, as explained a bit later), and protected from guessing attacks (e.g., contain complex combinations of letters, numbers, and punctuation). The compromise of one weak password that can be easily guessed—or the exposure of a strong password—may circumvent secure host ...

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