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If you are using Enpass on multiple devices, then we recommend enabling sync to keep your database updated across all your devices. Once enabled, Enpass will automatically take a backup of your data with the latest changes on the cloud which you can restore anytime on any device; thus lowering the risk of losing data.
Also, you don’t need to worry about the safety of your database as using sync is safe. Your cloud always contains a copy of the same encrypted data as on your device. Your data is always transmitted in the encrypted format. All the encryption and decryption of data happen locally on the device.
In a nutshell, your cloud is only a storage medium, and no security related operation (encryption or decryption) is performed there. All such operations are performed locally on your device.