First, get 1Password or something similar. Second, the mixed case alphanumeric definitely aids against brute force attacks, particularly in the case of an onli

First, get 1Password or something similar. Second, the mixed case alphanumeric definitely aids against brute force attacks, particularly in the case of an online attack (for an offline attack, there are probably hundreds of thousands of attempts per second so the only effective protection is a slow hashing function that limits attack speed)