A technique that improves security for non-volatile main memory in computer systems is disclosed. Some prior approaches that secure data between OS processes in such systems reduce the number of NVM write cycles by using encryption instead of shredding (zeroing out) physical memory pages between processes. However, in some circumstances, this solution can be less secure. The disclosed technique uses a pseudorandom function to change how the major counter is updated for a page that is to be shredded in order to increase security
