Signature Based Anomaly Detection
Senior Project: 1998-1999
David Deniman, Paul Kaliszewski, Kelly Le, Jason Nix and Michael Walter
Real-Time Intrusion Detection (RTID) systems attempt to determine when and how
systems might be compromised by external attacks on the systems, for instance,
an unauthorized user obtaining passwords of legitimate users and accessing
confidential data. While there are a number of systems that detect possible
attacks, they tend to generate many false positives, i.e. they report large
numbers of incidents as possible attacks that, after analysis, turn out to be
normal activity. Analyzing these incidents to determine if they are indeed an
attack is a very tedious and time-consuming task.
The goal of the project was to research the possibility of automating this
process. The approach was to develop a system that profiled normal activity on
a per user basis, and with the use of a neural network, compares potential
attacks to normal activity to determine if the suspected attack was real or
not.
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