PhD Research Student
Timothy’s PhD is in electronics and electrical engineering in the Wolfson School of Electrical, Electronic and Systems Engineering since 2017. He is being supervised by Dr. Kostas Kyriakopoulos and Prof. Sangarapillai Lambotharan, and being funded by the Doctoral College.
Timothy obtained a BSc in Electrical Engineering at the University of Malawi (UNIMA)-Polytechnic in 2005. He has undergone training in wireless networking at International Centre of Theoretical Physics, Italy and National Information Technology, Poland. Timothy completed an MTech in advanced IT – networking and telecommunications at International Institute of Information Technology, India in 2011 and later an MSc in mobile communication at Loughborough University in 2016. Presently, he is a Lecturer in telecommunications at UNIMA-Polytechnic and on study leave. He is interested in networking security applied in wireless networks and mobile communication. Timothy is a member of PGR Staff Student Liaison Committee under the 'Communication' theme.
Multistage Network Attack Detection and Inference using Hidden Markov Model
The quest for a secure networking environment remains a key priority for organisations. The explosion of cloud computing and Internet of Things (IoTs) devices has led to an increased network attack surface. Intrusion Detection Systems (IDSs) are inherently the first step towards protecting intrusions; however, Multistage Network Attacks (MSAs) are so sophisticated that they may be undetected by single-stage IDSs. This is because the individual stages of a MSA may not be malicious when implemented individually, furthermore, the attacks may span for a long period.
Timothy is researching towards early detection and mitigation of MSAs using hidden Markov model (HMM), a digital communication technique widely used in temporal pattern recognition such as speech, handwriting, bioinformatics and gesture recognition. The HMM shall be trained using recent MSA datasets and complemented by Dempster Shafer theory of belief to improve its performance.