Multi-Factor Authentication for z/OS
Today, the most common way for users to access z/OS® systems is by the use of passwords or password phrases. Due to the simplicity of passwords, they can present a relatively simple point of attack for exploitation. In order for systems that rely on passwords to be secure, they must enforce password controls and provide user education. Some of the common problems with a simple password are that users tend to: choose common passwords, write down their passwords, or unintentionally install malware that can key log passwords.
A more secure option is for systems to require multiple authentication factors to verify the user's identity.