TY - JOUR AB - Nowadays computer and network intrusions have become more common and more complicated, challenging the intrusion detection systems. Also, network traffic has been constantly increasing. As a consequence, the amount of data to be processed by an intrusion detection system has been growing, making it difficult to efficiently detect intrusions online. Proposes an approach for continuous user authentication based on the user’s behaviour, aiming at development of an efficient and portable anomaly intrusion detection system. A prototype of a host‐based intrusion detection system was built. It detects masqueraders by comparing the current user behaviour with his/her stored behavioural model. The model itself is represented by a number of patterns that describe sequential and temporal behavioural regularities of the users. This paper also discusses implementation issues, describes the authors’ solutions, and provides performance results of the prototype. VL - 11 IS - 3 SN - 0968-5227 DO - 10.1108/09685220310480426 UR - https://doi.org/10.1108/09685220310480426 AU - Seleznyov Alexandr AU - Puuronen Seppo PY - 2003 Y1 - 2003/01/01 TI - Using continuous user authentication to detect masqueraders T2 - Information Management & Computer Security PB - MCB UP Ltd SP - 139 EP - 145 Y2 - 2024/09/23 ER -