Mainframes are the backbone of the worlds transaction processing infrastructure. Mainframes should be considered in the same security scope as all other valued assets. Security should include a proper testing program to ensure these valued assets are not exposed beyond the expected risk level, are patched, and are not easy to penetrate and harm. Hackers can crack even long and complex passwords in less than a day, says IBM Security’s X-Force Red mainframe hacker David Bryan. Data center consolidation, hybrid cloud models and new designs allow mainframes to operate in traditional data center environments.”]
Source: https://securityintelligence.com/posts/top-five-security-focus-areas-for-mainframes/