Quote Originally Posted by tertius View Post
What is the source of that table? I think it underestimates the value of length.

E.g. put three random five letter words (English, all lower case) into a site like https://www.security.org/how-secure-is-my-password/ and it estimates 10 billion years to crack.
Just tried this with dictionary words, got "1 thousand years" without the spaces.

One of my regular passwords is in excess of 20 chars long and uses all of the classes from the last column in the graphic, Just tried one of the same length and similar structure and got 700 sextillion years! Which is 50,750 trillion times longer than the present age of the universe.

Pretty good password that, memorable enough that I don't have to copy & paste it so it's not stored anywhere, but highly secure.