What does password complexity refer to in the context of security?

Password complexity refers to the practice of using a combination of different character types in a password to enhance its security. This typically includes utilizing uppercase and lowercase letters, numbers, and special characters. By employing such a diverse range of characters, the strength and unpredictability of the password are significantly increased, making it much harder for attackers to guess or crack it using brute force methods.

In the context of security, ensuring that passwords are complex is a critical part of safeguarding accounts and sensitive information. Simple or predictable passwords can be easily compromised, exposing users to the risk of unauthorized access. Thus, promoting the use of complex passwords is a fundamental aspect of effective password policy and overall cybersecurity strategy.