A password is a sequence of characters that allows access to a computer system or online service. It serves as a security measure to protect sensitive information from unauthorized access. A strong password typically consists of a combination of uppercase and lowercase letters, numbers, and symbols. It is recommended to use a unique password for each account and to change passwords frequently to prevent potential security breaches. In recent years, there has been an increase in the use of password managers, which allow users to store and generate complex passwords securely. With the rise of cyber threats and data breaches, having a strong password is more important than ever.