Other users have access to my calendar, and I haven't actively shared it with them.
Why is this happening? Administrators can set the default sharing settings of calendars in your domain. It's common practice to set these default settings to See all event details. Under this setting, users will be able to manually add your calendar to their list of calendars.
There are two ways to change this:
To prevent other users from seeing event details, you can set individual events as private. To do this, select Private in the Visibility section when you create an event.
To manually select who can see your calendar, you can override the default sharing settings set by your administrator. To do this:
- Click on the little arrow next to your calendar.
- Select Share this calendar.
- In the next menu, under Share this calendar with others, you can select your preferred sharing settings for users within your domain and outside your domain.
You will still be able to give sharing rights to individuals by inviting them individually in the Share with a specific person view.