BusinessWeek says a 6 character password (just letters) can be cracked in just 10 minutes while a 9 character password complete with letters, uppercase, numbers and symbols will take 44,530 years to crack. Take a look at the image to see other comparisons, the first column describes your password, the other columns show you how long the hackers need to hack your password.
There’s a reason some sites ask for, or require, a password that contains both letters and numbers. The first column describes passwords. The other columns tell you how long it takes a hacker to figure them out. Don’t make it easy for someone to figure yours out.
