Back up data:
Data backup should be kept in different geographical location with strict access control mechanism.
Strong access control plan should be made. Packet filtering, Intrusion Detection System, etc. can be used to prevent from unauthorized access to the network. Staff members and
Software and Hardware tools are used to encrypt part of disk or whole disk with the aim of preventing unauthorized access.
Multifactor authentication can be used for the security of data. Authentication ensures the accountability of users.
The trained staffs can be aware about the importance of data security. So they will be preventing the unauthorized access to data.