As many security professionals, you probably sent an email to your users in the last couple of days asking them NOT to use Internet Explorer as their browser in light of the latest IE Zero Day vulnerability.
However, you may be lacking visibility to user behavior, finding it hard to observe if users actually follow your guidelines and indeed stop using Internet Explorer as their browser and use alternatives such as Chrome and Firefox instead.
UserInsight provides visibility to user behavior, enabling you to detect policy violation and make sure user adhere to guidelines. UserInsight maps processes running on endpoints in an agent-less way, enabling you to search for the process "iexplore.exe" and get a list of users still having IE used on their endpoints. We highly recommend that you ask these users to obtain from using IE, or even remove it.