Google Calendar gives users the choice of keeping calendar entries private or publishing them for the world to see. The data is out there thanks to the Search Google Calendar feature added to Googles Web-based calendar service last November. The McKinsey dial-in information, for example, was posted by a single person who had shared a number of calendar events. The company needs to make it very clear to users when they are posting information to the public, an auditing appliance vendor says.”]
Source: https://www.csoonline.com/article/2122145/google-corporate-calendar-leaks-corporate-data.html