Free SciNote version (https://my.scinote.net) uses HTTPS protocol to securely transmit data between a client (e.g. your browser) and SciNote server using secure symmetric cryptography. All communications between the client and the server are encrypted, therefore preventing third party data breaches.
Backups of all your data are being made on a daily basis. Also, the servers where your data is safely stored and the backup servers are in different locations due to security reasons and protection in case of natural disasters.