Dr. Thoyazan Sultan Ali Algaradi
Professional Summary
Assistant Professor in Computer Science specializing in Big Data Security, Cybersecurity, Network Security, Cryptography, and IoT Security. Over six years of university-level teaching experience, with experience in curriculum development, student supervision, academic program leadership, and research activities. Currently serving as Head of the Cybersecurity and Networks Program at the University of Science and Technology, Taiz Branch. Author of seven indexed publications and conference papers in big data security, authentication, Hadoop security, cryptography, and IoT network security.
Education
| Ph.D. in Computer Science (Big Data Security) | Kakatiya University, Warangal, India, 2021 |
| M.Sc. in Computer Networks | Swami Ramanand Teerth Marathwada University (SRTMU), Maharashtra, India, 2017 Graduated First in Merit – Class A / Very Good |
| B.Sc. in Computer Engineering | Hodaidah University, Yemen, 2014 Graduated Fourth in Merit – Very Good |
Academic and Professional Experience
| 2022 – Present | Head of Cybersecurity and Networks Program | University of Science and Technology (USTY), Taiz Branch, Yemen |
| 2022 – Present | Assistant Professor, Department of Computers | University of Science and Technology (USTY), Taiz Branch, Yemen |
| 2021 – 2024 | Lecturer in Computer Science, Cybersecurity, and Information Technology | Taiz University – Computer and IT Center; Sama College – Faculty of IT; Al-Khwarizmi College – Faculty of Cybersecurity and IT; Al-Hikmah University – Faculty of Engineering Sciences |
| 2017 – 2021 | Research Scholar | Kakatiya University, Warangal, India |
Teaching Experience
Over six years of teaching experience at undergraduate and postgraduate levels, covering computer science, cybersecurity, networking, programming, databases, and cloud-related courses. Supervised undergraduate graduation projects in cybersecurity, networks, and information technology for three years.
| Cybersecurity and Information Security Information Security; Cybersecurity Essentials; Ethical Hacking, Network and System Security; Cryptography; Web Application Security. |
Networking and Systems Data Communication and Networking; Switching and Routing; Wireless Networks; Advanced Networks; Network Administration; System Administration, Linux Practical. |
| Programming and Core Computer Science C++ Programming; Java Programming; Python Programming; Web Design; Data Structures and Algorithms; Algorithm Analysis and Design. |
Advanced Computing Distributed Systems; Cloud Computing. |
| Database, Software, and Digital Systems Database Design and Analysis; Database Administration; Software Engineering; Digital Multimedia; Digital Logic Design, Computer Organization and Architecture. |
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Research Interests
Cybersecurity | Big Data Security | IoT Security | Network Security | Cryptography | Key Management | Authentication Systems | Hadoop Security | Lightweight Security Mechanisms.
Publications and Conference Papers
Total: 7 indexed publications and conference papers in cybersecurity, big data security, cryptography, Hadoop security, and IoT network security.
- Algaradi, T. S., & Rama, B. (2018). Big Data Security: A Progress Study of Current User Authentication Schemes. 2018 4th International Conference on Applied and Theoretical Computing and Communication Technology (iCATccT), IEEE, pp. 68-75.
- Algaradi, T. S., & Rama, B. (2019). Static Knowledge-Based Authentication Mechanism for Hadoop Distributed Platform Using Kerberos. International Journal on Advanced Science, Engineering and Information Technology, 9(3), 772-780.
- Algaradi, T. S., & Rama, B. (2019). A Novel Blowfish-Based Algorithm to Improve Encryption Performance in Hadoop Using MapReduce. International Journal of Scientific and Technology Research, 8(11), 2074-2081.
- Algaradi, T. S., & Rama, B. (2021). A New Scheme to Improve Encryption/Decryption Performance on Big Data Environment Using MapReduce. Journal of Engineering Science and Technology (JESTEC), 16 (October Issue).
- Algaradi, T. S., & Rama, B. (2022). An Authenticated Key Management Scheme for Securing Big Data Environment. International Journal of Electrical and Computer Engineering (IJECE), 12(3), 3238-3248.
- Algaradi, T. S. (2025). ALGARADI: A Hybrid SPN-Feistel Block Cipher with Dynamic Round Keys. 2025 5th International Conference on Emerging Smart Technologies and Applications (eSmarTA), Ibb, Yemen. DOI: 10.1109/eSmarTA66764.2025.11132217.
- Algaradi, T. S. (2025). Lightweight and Intelligent DDoS Detection for IoT Networks: A Comprehensive Survey, Comparative Benchmark, and Research Roadmap. International Journal of Computer Networks and Applications (IJCNA), 12(4), 652-665. DOI: 10.22247/ijcna/2025/39.
Conferences, Workshops, and Academic Activities
- Presenter, iCATccT 2018, Mangalore, India – paper on Big Data Security.
- Lecturer, Security+ Training Course, University of Science and Technology, Taiz, Yemen, November 2022.
- Presenter, eSmarTA 2025, Ibb, Yemen – paper on Cryptography.
- Participant, AICTE ATAL FDP on Cybersecurity, NIT Warangal, India, 2019.
- Participant, AICTE ATAL FDP on Artificial Intelligence, NIT Warangal, India, 2019.
- Workshop: Big Data Analytics Using R Tools, Warangal, India, 2018.
- National Workshop on Cryptology (NWC-2018), Hyderabad, India.
- One-Week FDP on Big Data Analytics and Deep Learning, MJCET Hyderabad, India, 2018.
- Participant, Online Symposium on Internet and Email Security, Universiti Sains Malaysia, Penang, Malaysia, 2021.
- Seminar Speaker: Cybersecurity – Its Importance and Effects on Daily Life, USTY, Yemen, 2022.
- Participated in more than 15 additional conferences, seminars, and workshops in Yemen and internationally, covering cybersecurity, big data, cryptography, and emerging technologies.
Honors and Awards
- First Rank Certificate – M.Sc. Computer Networks, SRTMU, India, 2017.
- Academic Excellence Certificate – International Students Centre, SRTMU, India, 2018.
Reviewer and Academic Service
- Peer Reviewer, Journal of Reliable Intelligent Environments, Springer Nature, 2020.
- Reviewer, 1st International Conference on Emerging Technologies for Dependable Internet of Things (ICETI 2024), Sana’a University, Yemen, 2024.
Professional Certifications
Cisco CCNA | Cisco Security | Python Programming | Java Programming | Hadoop | English Fluency.
Skills
Technical Skills
Cybersecurity | Cryptography | Information Security | Network Security | IoT Security | Cloud Computing | Database Management | Python | Java | C++ | Linux/Kali OS.
Academic Skills
Curriculum Development | Course Design | Student Project Supervision | Academic Advising | Research Writing | Workshop and Seminar Organization | Program Coordination.
Academic Profiles
- ORCID: https://orcid.org/0000-0002-4529-3965
- Google Scholar: https://scholar.google.com/citations?user=2AFlqaAAAAAJ
- Scopus Author ID: https://www.scopus.com/authid/detail.uri?authorId=57209662678
- Official University Profile: University of science and technology – Taiz Branch

