A variety of security measures are commonly used to protect E-business systems and networks. These may embrace hardware as well as software tools, such as fault-tolerant computers, in addition to security monitors and also include security policies and procedures like passwords along with online backup or data backup files. All of them are part of an integrated security management effort at many inter-networked E-business enterprises today.
Data backup or online backup files refer to duplicate files of data (or programmes), which are considered an important security measure. Files can also be protected by file retention measures that involve storing copies of files from previous periods.
If the current files are destroyed, the data backup files can be used to reconstruct new current files. At times, different generations of files are restored for control purposes. Thus, master files from recent periods of processing (known as child, parent, grandparent files, etc.) may be kept for data backup or online backup purposes.
Such files may be stored off-premises, or at a location away from a company’s data centre, sometimes in special storage vaults in remote locations.