Password Haystacks: How Well Hidden is Your Needle?

Every password you use can be thought of as a needle hiding in a haystack. After all searches of common passwords and dictionaries have failed, an attacker must resort to a “brute force” search – ultimately trying every possible combination of letters, numbers and then symbols until the combination you chose, is discovered. viaGRC's | Password Haystacks: How Well Hidden is Your Needle? .