Quote from Alan:
Quote from morn:
An eight character maximum can be fairly easily hacked, how about 15-20+ character maximum.
Can you help me understand how?
With about 100 possible characters, an 8 char password is 1x^16 combinations. Assuming a brute-force attack gets there an average of half-way through the total, and 1 second per try/fail (it's actually a bit worse than that with TWS, much higher with AMS), I get about 2160x2160x2160^11 days to crack. This assumes that there is no lockout mechanism after a certain number of unsuccessful attempts (is there, IB?). If you could throw a million zombie machines at it, that's still 2160x2160x2160^5 days.
Yes, there is a lockout after multiple failed login attempts.
We will reduce the restrictions on password length. Your math is to the point, but security to the lay person is as much perception as reality. People feel safer with a door having 3 locks than 1, when in fact the weak point is the window.
The fact is that few password compromises are the result of brute force attacks. Most are based on social engineering problems such as passwords based on easily determined names, birthdates, etc, or by backdoor methods such as keystroke loggers or other internet borne diseases.