Bai, J., Chen, S., Zheng, D. and Kuo, M.-J. 2026. Interpretable Attack-Chain Stage Detection from AWS CloudTrail Event Sequences via Linear Models and HMM Smoothing . Informatics, Electrical and Electronics Engineering (Infotron). 6, 1 (May 2026), 28–43. DOI:https://doi.org/10.33474/infotron.v6i1.24923.