AN ANOMALY DETECTION TECHNIQUE BASED ON A CHI-SQUARE STATISTIC FOR DETECTING INTRUSIONS INTO INFORMATION SYSTEMS

摘要

An intrusion into an information system compromises its security (e.g. availability, integrity and confidentiality) through a series of events in the information system. Intrusive events often show departures (anomalies) from normal events in an information system. This paper presents an anomaly detection technique based on a chi-square static.