Email stores and PST files are fertile ground for opposing counsel looking for evidence. There is concern over the ability to search data. The effort needed to build a search capability that can search data for seven years is just as difficult as one that will search data kept forever. The likelihood that a corporation can successfully bury incriminating information in today’s digital age is nearly impossible. The important message is that organizations should not assume that a strict data retention strategy is protecting them. Any information that you don’t want to get out, will.”]
Source: https://www.darkreading.com/database-security/does-data-retention-really-protect-a-corporation-