There is another security issue with a plugin in Chrome browser – these days you can see everywhere talk about Webex zero day exploit for Chrome browser users. If you are Administrator where you operate your org on Google Apps you have some tools at your disposal to manage the risk and enable, disable or control what extensions, plugins users can install in their Chrome browser on business machines.
Google Knowledge Base articles to help you out:
Both articles will help you better manage your users on Chrome browser in your organization.