Division 3.1 Issue

At present it is possible to protect adequately computers from unauthorized access from the outside world by ‘isolation’, i.e. by applying conventional organizational and physical measures. This applies also to electronic communications within a closed user group operating on a dedicated network. The situation is very different if the information is shared between user groups or exchanged via a public, or generally accessible, network. Neither the technology, terminals and services nor the related standards and procedures are generally available to provide comparable security for information systems in these cases.