An example of the added password strength is shown below:

Enforcing a password policy to increase password strength and security.

See password strength, computer security, and computer insecurity.

Statistically, the possibility of recovering the password depends on the password strength.

Risks are also posed by several means of breaching computer security which are unrelated to password strength.

The level of password strength required depends, in part, on how easy it is for an attacker to submit multiple guesses.

As a result, there can be no exact answer to the somewhat different problem of the password strength required to resist brute force attack in practice.

High: Password policy, maximizing password strength, requires user to change it periodically.

Password strength is the likelihood that a password cannot be guessed or discovered, and varies with the attack algorithm used.

Password Strength:

Several web sites, and some standalone programs meant to be run without a network connection on a local machine, offer automated tests of password strength adequacy.

John the Ripper, a password strength checking program (the executable program is simply "john")

Password strength is a measure of the effectiveness of a password in resisting guessing and brute-force attacks.

It is usual in the computer industry to specify password strength in terms of information entropy, measured in bits, a concept from information theory.

The time to crack a password is related to bit strength (see password strength); which is a measure of the password's information entropy.

It is used to test password strength and sometimes to recover lost Microsoft Windows passwords, by using dictionary, brute-force, hybrid attacks, and rainbow tables.

The Password strength of a random password against a particular attack (brute-force search), can be calculated by computing the information entropy of the random process that produced it.

The system uses an authentication process that enforces minimum levels of password strength, as well as certificates and security tokens for multifactor authentication for remote connectivity.

In telecommunication, a password length parameter is a basic parameter the value of which affects password strength against brute force attack and so is a contributor to computer security.

A sufficiently long, randomly chosen, key can resist any practical brute force attack, though not in principle if an attacker has sufficient computational power (see password strength and password cracking for more discussion).

Similarly, the more stringent requirements for password strength, e.g. "have a mix of uppercase and lowercase letters and digits" or "change it monthly", the greater the degree to which users will subvert the system.

If the numbers and special character are added in predictable ways, say at the beginning and end of the password, they could even lower password strength compared to an all letter random password of the same length.

There are two factors to consider in determining password strength: the average number of guesses the attacker must test to find the correct password and the ease with which an attacker can check the validity of each guessed password.

The user password (controls opening) encrypts the file and requires password cracking to defeat, with difficulty depending on password strength and encryption method - it is potentially very secure (assuming good password and encryption method without known attacks).

The use of personal data to construct passwords i.e. family members' names, pet's names or birth dates increases the risk to confidential information and are easier to crack than long complicated passwords so password strength is a key strategy for protecting personal information.