Ragic uses the same 128-bit encryption and physical security that banks use, sensitive data are all stored in encryption or hash. We do not use an SQL database, so there's no chance of SQL injection or many other security holes that you would see in most other products. Nobody can see your data through a DB console.
Our servers are hosted by Google, and they have extremely high physical security measures, data are encrypted and written to multiple disks, and all databases are backed up daily and weekly. You can also manually backup your database from Ragic anytime you want.
If you still have concern, you can always purchase a private server to install on your own server or a service provider of your choice. Contact support@ragic.com for more detail on our security measures.