It is important to note that "numbers, upper and lower case letters, symbols" is not necessarily the best choice for a password.

I encourage people to look into criteria (and myths) about good passwords according to modern standards and security experts.

Of course, there is a related XKCD comic on password strength. :) A somewhat accessible discussion of factors to consider can be found here:

security.stackexchange.com/que…

XKCD #936: Short complex password, or long dictionary passphrase?

How accurate is this XKCD comic from August 10, 2011? I've always been an advocate of long rather than complex passwords, but most security people (at least the ones that I've talked to) are again...

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