The rivalry in the operating system market place has a severe impact on the academic world. Where in the old days intellection quality and careful deliberation would prevail, nowadays discussions about operating systems research appear to be more like the battlefield of a holy war, with objectivity as its main victim. We have tried to side step the emotional current, and select an operating sys...

Computer systems of today are subject to many attacks and it can be anticipated that these problems will increase in the future era. One way of protecting the systems is to use better authentication and other categories of preventive security mechanisms. These mechanisms do not offer good enough protection in most cases and they should therefore be complemented with monitoring and detection mec...