These are security methods employed by the owner of a system to guard against any unauthorised user. There are physical and software protection. The physical protection includes the use of security staff, mechanical devices, and electronic systems. Software protection is the use of programs to guard against unwanted users. This can be done by configuring …
Keep different copies of the same data in a secured place (back up files). Monitor the data regularly.
Software errors Mechanical problems Environmental hazards Intentional damage by persons Human errors
It is the process by which information kept in the master files is lost.
Extent to which the data may be subjected to unauthorized access. Possibility of stealing magnetic tape The confidentiality of the data The nature of the system in use.
To protect accidental disclosure To prevent loss of files. To avoid corrupting the programs. To keep the data secret.