In the last three years, the networking revolution has finally come of
age. More than ever before, we see that the Internet is changing computing
as we know it. The possibilities and opportunities are limitless;
unfortunately, so too are the risks and chances of malicious intrusions.
It is very important that the security mechanisms of a system are designed
so as to prevent unauthorized access to system resources and data.
However, completely preventing breaches of security appear, at present,
unrealistic. We can, however, try to detect these intrusion attempts so
that action may be taken to repair the damage later. This field of
research is called Intrusion
Detection.
