Contrary to popular belief, the files you save in cloud-based services like Microsoft OneDrive may actually be safer on those remote servers than on your on-premises hardware.
The reason for this is that large-scale enterprises such as Microsoft use best-in-class encryption and cyber security measures to protect the data they hold for their clients. By contrast, many small businesses naturally cannot match the level of cyber security measures offered by the big providers. For example, Microsoft uses Advanced Encryption Standard (AES) with 256-bit keys for data at rest, as well as being Federal Information Processing Standard (FIPS) 140-2 compliant. In addition, data in transit is protected via SSL / TLS connections using 2048-bit keys.