Data security management has become an important concern for thos consideraing making use of online decision analysis systems and software as a service. There are three aspects to this issue of data security:

• protection of data from access by third parties
• protection of data from corruption and transmission losses
• maintenance of accessibility to data to sustain services

In all three cases Virtual Client Technology (VCT) in the form of Navatec Voyager can maintain a very rigorous access control to data through VCT protocols which are user specific as opposed to being standards. In the case of data losses and transmission losses, Navatec Voyager has a roll-back or commit process where if data has been compromised or corrupted it is not transmitted or saved but the system rolls back to the state before the process began. This takes place within a very short space of time and is usually not noticed by users. The maintenance of accessibility relates to network uptime and bandwidth constraints which can occur in remote sections of the Internet. This can sometimes result in loss of access although usually for short periods of time. In some parts of the world this remains a significant problem.