This free online interactive brute force search space calculator allows you to experiment with password length and composition to develop an accurate and quantified sense for the safety of using passwords that can only be found through an exhaustive search. See: https://www.grc.com/haystack.htm
Securezoo offers free guidance on information security for small and mid-sized businesses (SMBs) and security professionals. Covers typical policies you would need, standards and guidelines. See: www.securezoo.com/
