Passwords - Absolute Limits
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- Always imposed by the design of the operating system
- General formula: P = LR/S (P: Probability to guess the password, L: Lifetime of the password, R: Attempt rate, S: size of the password space)
- Serious problem: attacker is not interested in one special password, but in getting access to an account (trying one password over many accounts leads to success too!)
- Disregarding case-sensitive causes a much lower possibility and shorter recognition time
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