Credentials are what you use when you sign-in or login to a service or app.

Credentials can be a combination of username, passphrase, or tokens. In some systems, usernames are email addresses.

Password managers are used to improve the security of credentials.

Credential stuffing is a common attack exploiting a common practice of reusing the same username-password combination across multiple services.

This is a focused list of definitions, published to help our readers understand what we mean in our simple language guides on techniques and IT.
Dog with heart-shaped nose in a screen, AKA the Majorcord logo.