The service has Secure Browsing reports that you can run to track the use of vulnerable browsers, plugins, and applications, so you can take the necessary actions. To run these reports:
Go to Analytics > Interactive Reports. In the Standard Reports tab, expand the Secure Browsing section, to see the available reports.
Additionally, you can view a list of the top users with vulnerable browsers and plugins.
The service lists users who are using browsers, plugins, and applications for which you set warnings.