Rule Title: Userdata persistence must be disallowed (Restricted Sites zone).
Userdata persistence must have a level of protection based upon the site being accessed. This policy setting allows you to manage the preservation of information in the browser's history, in favorites, in an XML store, or directly within a web page saved to disk. When a user returns to a persisted page, the state of the page can be restored if this policy setting is not appropriately configured.
How this relates to the STIG checklist: STIG vs SCAP benchmark.