A backup plugin was installed. 

Total Upkeep is a full 360 solution that keeps your data safe and protects your website from catastrophic data loss. Features include:

• Automated and manual backups
• Full file and database backup or customize settings based on your needs
• Remote backups via FTP / SFTP, Amazon S3 and Google Drive (Premium)
• Total Upkeep checks to ensure that your web server has the necessary features to properly create backup archives, which protects the integrity of your backups
• Clone, duplicate and/or migrate your site with just a few clicks
• Site Check monitors your site for issues that could lead to site crashes, provides a tool set to restore your site even if your WordPress installation is inaccessible
• Auto rollback feature creates a backup before updates, restores your site to the last backup if an update fails
• Create staging sites to test new plugins or themes with Total Upkeep + Cloud WordP