The problem with least privilege is it tends to deal with attacks against the system not attacks on the information. With Windows 7, UAC, and solutions such as BeyondTrust Privilege Manager, corporations are able to now have all users (standard and admins) run with least user privileges. The fact that the user might have insecure data on their computer has NOTHING to do with least privlege. That is a corporate security issue, which is allowing users to store data locally. It is a security issue.”]
Source: https://taosecurity.blogspot.com/2010/08/review-of-least-privilege-security.html