Abstract: The disclosure relates to a computer implemented method for assisting a user managing the data-security of backup copies of a computer system having a plurality of nodes, the method comprising: receiving status data for backup copies associated with a plurality of nodes, wherein, for each node, the status data provides a status of one or more backup copies associated with the node with respect to a plurality of data-security criteria; determining a backup security metric for each of the plurality of nodes based on the status data; and providing the security metrics for the user to demonstrate the relative level of backup data-security of the plurality of nodes.