Password strength is a measure of the effectiveness and estimates how many trials an attacker who does not have direct access to the password would need, on average, to guess it correctly.
Password strength is a measure of the effectiveness how many trials an attacker would need to guess it correctly. This is on average. Password strength is a measure of estimates how many trials an attacker would need to guess it correctly. This is on average. This attacker does not have direct access to the password.