What are the factors that go into mainframe security and Why???

According to me this makes it easier to set network security policy across multiple instances of  mainframe operating systems. Administrators only need to define one centralized policy to enforce network encryption rules and intrusion detection for all  systems within an enterprise including the distributed ones attempting communication with Mainframe systems.

 PKI services will help improve the creation, authentication, renewal, and management of digital certificates for user and device authentication, and it can also be used for many important tasks, such as securing a wireless network infrastructure using WPA security, exploiting smartcard technology on credit and cash cards and securing the end nodes of a Virtual Private Network....This is a major factor that go into mainframe security....