Password entropy is a measure of how secure a password is against guessing. It takes into account the length, complexity, and randomness of the password to calculate the likelihood that an attacker could guess the password. The higher the entropy, the more secure the password.
Why does password entropy matter? Well, it’s a fact that the vast majority of cyber-attacks are enabled by weak passwords. In fact, according to the 2019 Verizon Data Breach Investigations Report, 81% of hacking-related breaches used stolen or weak passwords. That’s why using a secure password is so important.
When creating a password, it’s important to make sure it’s not something easily guessed. Using a combination of random characters, numbers, and symbols can help increase the password’s entropy and make it more difficult to guess. It’s also important to use a unique password for each of your accounts. Having different passwords for different accounts means that if one of your passwords is compromised, the others remain secure.
Ultimately, password entropy is an important measure of password security. Understanding how to create secure passwords and why password entropy matters can help protect your accounts from hackers and keep your information secure.
For anyone who’s curious about tying this down to a real world metric, check out our Passphrase Generator. Our generator will show you the entropy of truly randomly generated passphrases. Changing the parameters found in the ‘Options’ tab will increase or decrease the password’s entropy.
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