A password or passphrase can be generally defined as a combination of letters, numbers, and symbols in a string for identity validation.
Every application that supports authentication mechanisms compares the given entries/credentials with local or remote databases. In the case of local databases, these credentials are stored locally on the system. Web applications are often vulnerable to SQL injections, which can lead to the worst-case scenario where the attackers view the entirety of an organization's data in plain text.