Enterprise security

Unmatched integrated security to protect your most critical information workloads and assets

IBM strongly recommends that users of the z/VSE Operating System validate the currency of security and system integrity service and take action to promptly install all security and integrity PTFs.  As a best practice, IBM strongly recommends that clients obtain the latest service information, including  any security and system integrity APARs for z/VSE from the Service and Support site.

In addition to available PTFs, IBM includes any pertinent Security and/or Integrity APAR fixes in the next Preventative Service Planning (PSP) bucket or Recommended Service Level (RSL) after the fix is available.  The PSP bucket for z/VSE contains all HIPER PTFs along with other recommended service for a specific set of products or components on a given z/VSE refresh level.  The RSL offering provides a list of all APAR/PTF numbers available at specific cutoff dates and fills the gap between regular z/VSE Refresh levels and the more urgent service provided by the PSP bucket.

It is strongly recommended that clients validate the currency of their z/VSE security and system integrity service levels and routinely check the z/VSE Service and Support site to receive the latest information on System z security and system integrity service. The timely installation of service, including security and system integrity service, can help minimize potential risks and maintain overall system security and availability.

Contact IBM

Browse System z


IBM provides world-class IBM mainframe technology to help today's enterprises respond quickly to evolving business conditions and with extreme flexibility. From automation to advanced virtualization technologies and open industry standards, IBM mainframes help deliver competitive advantages for enterprises contributing and succeeding on a smarter planet.

Operating Systems

IBM System z supports multiple operation systems:


IBM's technology, solutions and industry expertise can help you find the competitive edge with a sharper understanding of your customers. Our System z solutions combine the foundation of IBM hardware, software and middleware with flexible financing and packaging options to help your business meet and overcome the challenges of doing business in the on demand world. IBM can help you develop a customer-centric view—and assist you in delivering the right solution and the right products.

Related links