Keeping your information confidential and secure is of utmost importance to us. It is something we take very seriously here at QuickBooks and Intuit as a whole. We know that you put your trust in us to safeguard their personal and financial details, and we're committed to keeping your data safe.
QBO automatically backs up your data in our cloud server every night. In fact, your data is saved to two hard drives and we also copy all your data to a third-party hard drive in case something happens to the first two hard drives. Refer to this article for more info: Do I need to back up my data with QuickBooks Online?.
In addition to that, you can manually save your company data by exporting them to an Excel file.
Go to the Gear icon, then under Tools, choose Export Data.
Click It's a backup, then click Continue.
Select the Reports and Lists you want to export.
Click Export to Excel.
As another option, QBO does offer the support of thousands of various third-party applications for any functionality you may need. To see if there's an app that can help you accomplish this, head to the Intuit App center and type a keyword like "Backup" in the search-bar.
I've also gathered helpful links so you can get a better sense of the security measures QuickBooks Online takes to protect your information, as well as learn tips about how to protect your account and details.