olemus
piisavalt mõistatamiskindel parool, mille tugevus saavutatakse pikkusega, märgiliikide seguga (suurtäht, väiketäht, number, muu), märkide järjestuse juhuslikkusega, vahetamise sagedusega
= sufficiently cryptic password, the strength of which is achieved by its length, a mixture of character types (uppercase, lowercase, number, other), randomness of the order of characters, frequency of exchange

ülevaateid
https://en.wikipedia.org/wiki/Password_strength

https://smallpdf.com/blog/strong-password

https://my.sbu.edu/docs/default-source/Technology/creating-strong-passwords.pdf?sfvrsn=0

https://www.safetydetectives.com/password-meter/

https://www.security.org/how-secure-is-my-password/

https://www.madestuffeasy.com/best-free-password-manager-software-for-2018/