Checking Your Website Logs
If you believe your site has been vandalized, you can check your Website Logs for the activity of your website.
The website log can be found by going to your Website's Admin Panel -> Logs.
You can set a range of dates to narrow the time frame of actions that will be displayed on the page. This can be done by clicking on either of the two fields at the top left of your site logging page. Clicking these expands a calendar - the field to the left of "TO" allows you to set the start date, while the field to the right of it allows you to set the end date.
Note that Website Logs will track changes up to 60 days for websites on the Advanced plan websites and up to 120 days for websites on the Ultimate plan. Items older than this will be deleted automatically.