BEGIN:VCALENDAR VERSION:2.0 X-WR-CALNAME:EventsCalendar PRODID:-//hacksw/handcal//NONSGML v1.0//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/New_York LAST-MODIFIED:20240422T053451Z TZURL:https://www.tzurl.org/zoneinfo-outlook/America/New_York X-LIC-LOCATION:America/New_York BEGIN:DAYLIGHT TZNAME:EDT TZOFFSETFROM:-0500 TZOFFSETTO:-0400 DTSTART:19700308T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU END:DAYLIGHT BEGIN:STANDARD TZNAME:EST TZOFFSETFROM:-0400 TZOFFSETTO:-0500 DTSTART:19701101T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU END:STANDARD END:VTIMEZONE BEGIN:VEVENT CATEGORIES:College of Engineering,Thesis/Dissertations DESCRIPTION:Thesis Advisor: Gokhan Kul, Department of Computer and Informat ion Science Committee Members: Ashokkumar Patel, Department of Computer a nd Information Science Adnan El-Nasan, Department of Computer and Informat ion Science Abstract: Zero-day cyberattacks pose a major challenge to tra ditional Intrusion Detection Systems (IDS) because previously unseen attac ks are not represented in training data and are often misclassified. While recent open-set recognition methods can identify unknown traffic, they ty pically provide limited insight into the nature of detected anomalies. Thi s thesis presents a unified framework for open-set intrusion detection and semantic analysis of unknown network traffic by integrating deep learning , reinforcement learning, and large language models (LLMs). The proposed a pproach uses a Convolutional Neural Network (CNN) to learn traffic represe ntations and a Deep Q-Network (DQN) to distinguish known from unknown traf fic using uncertainty-based metrics without manually defined thresholds. A n LLM reasoning module is selectively applied to traffic identified as unk nown to generate interpretable behavioral explanations. Experiments on the CICIDS-2017 and UNSW-NB15 datasets demonstrate that the CNN-DQN framework achieves a binary F1-score of 97.83% for known-versus-unknown traffic cla ssification while effectively identifying previously unseen attacks. The L LM-assisted analysis further provides meaningful behavioral interpretation s of suspicious network activity, improving the explainability of intrusio n detection outcomes. The proposed framework contributes to the developmen t of adaptive and explainable intrusion detection systems capable of ident ifying and interpreting emerging cyber threats, supporting faster incident response and enhanced cybersecurity decision-making. For further informat ion please contact Dr. Gokhan Kul at gkul@umassd.edu\nEvent page: https:// www.umassd.edu/events/cms/7-2-26-open-set-intrusion-detectionsemantic-anal ysis-of-0-day-network-attacks.php\nEvent link: https://teams.microsoft.com /meet/258262216614270?p=5gSDREaPiTObpT1eqG X-ALT-DESC;FMTTYPE=text/html:

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Thesis Advisor: Gokhan Kul\, De partment of Computer and Information Science

Committee Members:

Ashokkumar Patel\, Department of Computer and Information Sci ence
Adnan El-Nasan\, Department of Computer and Information Sci ence

Abstract:

Zero-day cyberattacks pose a major challenge to traditional Intrusion Detection Systems (IDS) because previou sly unseen attacks are not represented in training data and are often misc lassified. While recent open-set recognition methods can identify unknown traffic\, they typically provide limited insight into the nature of detect ed anomalies. This thesis presents a unified framework for open-set intrus ion detection and semantic analysis of unknown network traffic by integrat ing deep learning\, reinforcement learning\, and large language models (LL Ms). The proposed approach uses a Convolutional Neural Network (CNN) to le arn traffic representations and a Deep Q-Network (DQN) to distinguish know n from unknown traffic using uncertainty-based metrics without manually de fined thresholds. An LLM reasoning module is selectively applied to traffi c identified as unknown to generate interpretable behavioral explanations. Experiments on the CICIDS-2017 and UNSW-NB15 datasets demonstrate that th e CNN-DQN framework achieves a binary F1-score of 97.83% for known-versus- unknown traffic classification while effectively identifying previously un seen attacks. The LLM-assisted analysis further provides meaningful behavi oral interpretations of suspicious network activity\, improving the explai nability of intrusion detection outcomes. The proposed framework contribut es to the development of adaptive and explainable intrusion detection syst ems capable of identifying and interpreting emerging cyber threats\, suppo rting faster incident response and enhanced cybersecurity decision-making.

For further information please contact Dr. Gokhan Kul at gkul@uma ssd.edu

Event page: /events/cms/7-2-26-open-set-intrusion-detections emantic-analysis-of-0-day-network-attacks.php
Event link: htt ps://teams.microsoft.com/meet/258262216614270?p=5gSDREaPiTObpT1eqG

DTSTAMP:20260610T104832 DTSTART;TZID=America/New_York:20260702T123000 DTEND;TZID=America/New_York:20260702T133000 LOCATION:Zoom - Online SUMMARY;LANGUAGE=en-us:Open-Set Intrusion Detection and Semantic Analysis o f Zero-Day Network Attacks Using Deep Reinforcement Learning and Large Lan guage Models UID:0cf8d650cc1f9a6c27afe61317c8a500@www.umassd.edu END:VEVENT END:VCALENDAR