MSc in Cyber Security

Permanent URI for this collectionhttps://rda.sliit.lk/handle/123456789/2918

Students enrolled in the MSc in Cyber Security programme are required to submit a thesis as a compulsory component of their degree requirements. This collection comprises merit-based theses submitted by postgraduate candidates specialising in Cyber Security. Abstracts are available for public viewing, while the full texts can be accessed on-site within the library.
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Theses and Dissertations of the Sri Lanka Institute of Information Technology (SLIIT) are licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License .

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Author: search.filters.author.Ariyawansa, M.M.T.R.Has files: Yes

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    PublicationOpen Access
    Enhancing Email Security: Abnormal Login Detection Through Machine Learning Algorithm
    (SLIIT, 2024-12) Ariyawansa, M.M.T.R.
    The research focuses on the application of random forest machine learning algorithm for the identification of non-standard authentication activities in email systems. The idea of the software is to strengthen email defenses by the means of the dynamical determination of the unusual login patterns and then responsively to the continuously changing threats in cyberspace. These projects use the most up-to-date machine learning approaches, meticulous hyperparameter tuning and comprehensive feature engineering, so that a strong barrier against unauthorized entry would be created. The purpose is to design a machine learning model capable of differentiating between the most and least likely behaviors, based on the analysis of users' activity data. This includes steps of label encoding and timestamp processing targeted to clean the input data before model training for optimal efficiency. In the process of training, the Scikit-learn library is employed to implement the machine learning algorithms. Furthermore, hyperparameter optimization is performed using GridSearchCV to refine the model’s accuracy and efficiency. The study puts its emphasis on user-friendly implementation with the development of an intuitive interface offering the users an understandable classification report illustrating the model of breach detection performance. The developed model that associated the random forest machine learning algorithm showed a accuracy of 83%, making it ideal for real world use. Instead of just enhancing user engagement, it also enables prompt reaction and mitigation measures. As a result, this thesis offers a practical and effective way of guarding email accounts from rapidly evolving threats.