“ Software and data integrity are also requirements of all computer systems. Users of the system require assurance that unauthorized changes, deliberate or accidental, do not take place. The integrity of all software, utilities and applications must be above question, otherwise the results of manipulating the data will not be practicable. ”

“ There is little point in emphasizing sophisticated systems features if more basic and perhaps more vulnerable areas are slighted. It also has been noted that, owing to the cost or unavailability of technical features in computer systems, physical or procedural safe-guards are sometimes practical alternatives. ”

“ Although these three categories represent the features of computer systems that security measures should target, the current limitations of computer security technology require that a much broader view of safe-guards be taken. Computer security is a weak-link phenomenon. To ensure that complete protection is provided to EDP assets, other established security areas, such as administrative, personnel, physical and communication-electronic security, must be taken into consideration. ”