Hybrid Machine Learning Model for Robust Financial Fraud Detection Varsha, Nikhil Sharma, Ashwani Kumar Proceedings of 8th International Conference on Intelligent Sustainable Systems Iciss 2026, 2026 The rapid growth of digital financial services such as online banking, card payments and mobile transactions has increased the number of fraudulent activities which makes fraud detection a major challenge for researchers. Traditional fraud detection methods depend on a single machine learning model which often fails to identify unusual transaction patterns, time-based behavior and complex relationships between features at the same time. To overcome these limitations, this paper proposes a hybrid fraud detection framework that combines unsupervised anomaly detection, temporal deep learning, and ensemble gradient boosting models. First the transaction data are preprocessed, normalized and enhanced by extracting important behavioral and transaction level features along with user based statistical information. An autoencoder is used to detect unusual transactions by measuring reconstruction errors while Bidirectional LSTM model learns sequential transaction patterns over time. Finally, LightGBM and XGBoost are used to classify transactions as fraudulent or normal using the improved features. Experimental results show that the proposed approach achieves high performance with 97% accuracy, 95% precision, 98% recall, 96% F1-score and 99% ROC-AUC value. Compared to existing techniques the proposed framework performs better. Ablation studies show that each part of the model is important proving that the hybrid approach works well for detecting fraud in real world financial systems.
Towards secure healthcare: SA-GBO-ODBN model utilizing Blockchain and deep learning for data handling and diagnosis Nikhil Sharma, Prashant Giridhar Shambharkar Computer Journal, 2025 The integration of Electronic Health Records (EHRs) in healthcare has significantly advanced the field but introduced challenges related to data security and precise diagnoses due to the large data volume. To address these issues, we propose the SA-GBO-ODBN model, combining Blockchain and deep learning (DL) for secure medical data management and diagnostics. This model includes Hyperledger Fabric for tamper-proof storage, optimal key generation, data encryption and decryption, and disease detection functionalities. The Key features of the proposed framework include emergency contact notifications, user data access management, and administrative data modifications. The framework employs SHA-256 and elliptical curve cryptography (ECC) for enhanced data security. ECC uses the Self-Adaptive Gradient-Based Optimizer (SA-GBO) to generate optimal encryption and decryption keys. Hyperledger blockchain technology enables secure medical data sharing, patient visit data storage, and EHR link recording in external databases via multiple channels. After decryption, the Optimized Deep Belief Network–based approach diagnoses epilepsy using real-time EEG datasets. The qualitative and quantitative performance analysis shows the proposed framework’s superiority over existing techniques, with accuracy, False Positive Rate (FPR), and FNR of 98.93%, 0.0199, and 0.0034 for the Bonn EEG dataset, and 99.40%, 0.0196, and 0.0034 for the CHB-MIT dataset, respectively.
A Systematic Literature Review of the Emerging Technologies used in Securing Healthcare Data Nikhil Sharma, Prashant Giridhar Shambharkar Iemecon 2024 12th International Conference on Internet of Everything Microwave Embedded Communication and Networks, 2024 This study investigates the unification of blockchain technology and artificial intelligence (AI) models to improve the security and privacy of healthcare records. As healthcare systems increasingly depend on digital technologies, the protection of sensitive patient information has become a critical challenge. Blockchain's decentralized, immutable ledger offers robust data integrity and transparency, while AI techniques provide powerful tools for predictive analytics and decision-making. However, combining these two technologies introduces substantial challenges, including scalability issues, privacy concerns, and the requirement for regulatory compliance. This study systematically reviews existing literature to identify key challenges and promise solutions in the amalgamation of blockchain and AI within healthcare. We evaluate the applicability, objectives, techniques, and security measures of selected studies to assess their relevance and contribution to the field. Our findings reveal that while significant progress has been made, gaps remain in areas such as the alignment of these technologies with regulatory frameworks, the development of privacy-preserving AI methods, and the protection of AI models from adversarial attacks. The paper concludes by proposing a set of research questions and future directions to address these challenges, with the aim of advancing the secure and ethical integration of blockchain and AI in healthcare.
Soldier Strap: An IoT-Based Safety and Security Band for Soldiers Iot Enabled Healthcare Systems Applications Benefits and Challenges, 2024
A Study of Artificial Intelligence's Role in Object Detection Aradhya Singh Bisht, Amit Kumar Jha, Abhinav Sachdeva, Nikhil Sharma Proceedings IEEE 2023 5th International Conference on Advances in Computing Communication Control and Networking Icac3n 2023, 2023
Evolution From Industry 1.0 to Industry 5.0 Aeshita Mathur, Ameesha Dabas, Nikhil Sharma Proceedings 2022 4th International Conference on Advances in Computing Communication Control and Networking Icac3n 2022, 2022
Role of Artificial Intelligence in Object Detection: A Review Aradhya Singh Bisht, Amit Kumar Jha, Abhinav Sachdeva, Nikhil Sharma Proceedings 2022 4th International Conference on Advances in Computing Communication Control and Networking Icac3n 2022, 2022
Securing Biometric Framework with Cryptanalysis Abhishek Goel, Siddharth Gautam, Nitin Tyagi, Nikhil Sharma, Martin Sagayam Intelligent Data Analytics for Terror Threat Prediction Architectures Methodologies Techniques and Applications, 2021
An Integrated Approach of Blockchain & Big Data in Health Care Sector Applications of Machine Learning in Big Data Analytics and Cloud Computing, 2021
Attacks and Security Measures in Wireless Sensor Network Nikhil Sharma, Ila Kaushik, Vikash Kumar Agarwal, Bharat Bhushan, Aditya Khamparia Intelligent Data Analytics for Terror Threat Prediction Architectures Methodologies Techniques and Applications, 2021
IoE: A boon threat to the mankind Apeksha Rustagi, Chinkit Manchanda, Nikhil Sharma Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Producing energy using blind man stick Depender Kumar Soni, Nikhil Sharma, Ila Kaushik, Bharat Bhushan Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Evolution of 5G wireless network in IoT Saurabh Arora, Nikhil Sharma, Bharat Bhushan, Ila Kaushik, Anas Ahmad Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Importunity evolution of IoT for 5G Anas Ahmad, Bharat Bhushan, Nikhil Sharma, Ila Kaushik, Saurabh Arora Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Precedence & issues of IoT based on edge computing Sukriti Goyal, Nikhil Sharma, Ila Kaushik, Bharat Bhushan, Abhijeet Kumar Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Security challenges controls in cyber physical system Rajat Rathi, Nikhil Sharma, Chinkit Manchanda, Bharat Bhushan, Moksh Grover Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Security issues & seclusion in bitcoin system Depender Kumar Soni, Harbhajan Sharma, Bharat Bhushan, Nikhil Sharma, Ila Kaushik Proceedings 2020 IEEE 9th International Conference on Communication Systems and Network Technologies Csnt 2020, 2020
Privacy Issues Security Techniques in Big Data Archit Tiwari, Nikhil Sharma, Ila Kaushik, Ratik Tiwari Proceedings 2019 International Conference on Computing Communication and Intelligent Systems Icccis 2019, 2019
Network Layers Threats its Countermeasures in WSNs Vardaan Pruthi, Kanika Mittal, Nikhil Sharma, Ila Kaushik Proceedings 2019 International Conference on Computing Communication and Intelligent Systems Icccis 2019, 2019
Evolution of IoT Data Analytics using Deep Learning Ratik Tiwari, Nikhil Sharma, Ila Kaushik, Archit Tiwari, Bharat Bhushan Proceedings 2019 International Conference on Computing Communication and Intelligent Systems Icccis 2019, 2019
Security Countermeasures in Web Based Application Aditi Sharma, Ankit Singh, Nikhil Sharma, Ila Kaushik, Bharat Bhushan 2019 2nd International Conference on Intelligent Computing Instrumentation and Control Technologies Icicict 2019, 2019
Taxonomy of Attacks on Web Based Applications Ankit Singh, Aditi Sharma, Nikhil Sharma, Ila Kaushik, Bharat Bhushan 2019 2nd International Conference on Intelligent Computing Instrumentation and Control Technologies Icicict 2019, 2019
Log Analysis for Cyber Attack Detection Using AI S Singh, N Sharma, N Singh, R Gaikwad Available at SSRN 6602700 , 2026 2026
Hybrid Machine Learning Model for Robust Financial Fraud Detection N Sharma, A Kumar 2026 8th International Conference on Intelligent Sustainable Systems (ICISS … , 2026 2026
Enhancing internet of medical things security: A multi-layered approach using dynamic adaptive deep reinforcement learning and blockchain N Sharma, PG Shambharkar Computers and Electrical Engineering 129, 110808 , 2026 2026 Citations: 3
Blockchain-based framework for secure medical data sharing and disease diagnosis using optimized deep belief networks N Sharma, PG Shambharkar Cluster Computing 28 (16), 1029 , 2025 2025 Citations: 2
Thermomechanical interaction in photothermoelastic with fractional order derivatives and hyperbolic two temperature S Chopra, R Kumar, N Sharma Journal of Solid Mechanics 3 (3), 301 , 2025 2025
XAI-driven multi-attention DeepCRNN for enhanced cyberattack detection in internet of medical things environments PG Shambharkar, N Sharma Pervasive and Mobile Computing, 102123 , 2025 2025 Citations: 3
Towards secure healthcare: SA-GBO-ODBN model utilizing Blockchain and deep learning for data handling and diagnosis N Sharma, PG Shambharkar The Computer Journal 68 (10), 1386-1423 , 2025 2025 Citations: 11
Multi-layered security architecture for IoMT systems: integrating dynamic key management, decentralized storage, and dependable intrusion detection framework N Sharma, PG Shambharkar International Journal of Machine Learning and Cybernetics 16 (9), 6399-6446 , 2025 2025 Citations: 34
Transforming security in internet of medical things with advanced deep learning-based intrusion detection frameworks N Sharma, PG Shambharkar Applied Soft Computing 180, 113420 , 2025 2025 Citations: 19
Multi-attention DeepCRNN: an efficient and explainable intrusion detection framework for Internet of Medical Things environments: N. Sharma, PG Shambharkar N Sharma, PG Shambharkar Knowledge and Information Systems 67 (7), 5783-5849 , 2025 2025 Citations: 43
Blockchain for Medical Record Management: Ensuring Data Privacy and Integrity RK Pandey, N Sharma, S Kumar, A Pandey 2025 Citations: 1
Soldier Strap: An Iot-Based Safety And Security Band For Soldiers S Verma, N Sharma, I Kaushik, DK Verma, M Gupta IoT-Enabled Healthcare Systems, 35-54 , 2024 2024
A systematic literature review of the emerging technologies used in securing healthcare data N Sharma, PG Shambharkar 2024 12th International Conference on Internet of Everything, Microwave … , 2024 2024 Citations: 11
IoT Securities: Applications, Security Issues and Solutions Using Diverse Technologies L Bajaj, N Sharma, PG Shambharkar Reshaping Intelligent Business and Industry: Convergence of AI and IoT at … , 2024 2024 Citations: 1
Deep learning-empowered intrusion detection framework for the Internet of Medical Things environment PG Shambharkar, N Sharma Knowledge and Information Systems 66 (10), 6001-6050 , 2024 2024 Citations: 24
Machine learning models in customer behaviour prediction: A comparative analysis L Kumari, K Bhattacharjee, N Sharma, S Kumar, A Kumari 2024 7th International Conference on Contemporary Computing and Informatics … , 2024 2024 Citations: 5
Utilizing deep learning and advanced machine learning methods in economic data analysis H Sharma, A Garg, RK Singhal, MP Gaur, H Sharma, N Sharma 2024 1st International Conference on Advanced Computing and Emerging … , 2024 2024 Citations: 8
Social Media Interactive Resource Planner For Students: Smirp AS Bisht, A Joshi, N Sharma 2024 4th International Conference on Advance Computing and Innovative … , 2024 2024
A Study of Artificial Intelligence’s Role in Object Detection AS Bisht, AK Jha, A Sachdeva, N Sharma 2023 5th International Conference on Advances in Computing, Communication … , 2023 2023
IoT and big data analytics for smart healthcare 4.0 applications A Malik, V Parihar, K Purohit, AKM Bahalul Haque, N Sharma, ... International Conference on Intelligence Science, 469-479 , 2023 2023 Citations: 5
MOST CITED SCHOLAR PUBLICATIONS
Iot enabled technology in secured healthcare: Applications, challenges and future directions S Goyal, N Sharma, B Bhushan, A Shankar, M Sagayam Cognitive internet of medical things for smart healthcare: services and … , 2020 2020 Citations: 161
Evolution of iot to iiot: Applications & challenges H Jaidka, N Sharma, R Singh Proceedings of the international conference on innovative computing … , 2020 2020 Citations: 152
Architectural model of security threats & theircountermeasures in iot T Varshney, N Sharma, I Kaushik, B Bhushan 2019 international conference on computing, communication, and intelligent … , 2019 2019 Citations: 96
Applicability of industrial IoT in diversified sectors: evolution, applications and challenges R Sethi, B Bhushan, N Sharma, R Kumar, I Kaushik Multimedia technologies in the Internet of Things environment, 45-67 , 2020 2020 Citations: 85
Evolution from industry 1.0 to industry 5.0 A Mathur, A Dabas, N Sharma 2022 4th International Conference on Advances in Computing, Communication … , 2022 2022 Citations: 82
Evolution of IoT & data analytics using deep learning R Tiwari, N Sharma, I Kaushik, A Tiwari, B Bhushan 2019 international conference on computing, communication, and intelligent … , 2019 2019 Citations: 62
Applicability of WSN and biometric models in the field of healthcare N Sharma, I Kaushik, B Bhushan, S Gautam, A Khamparia Deep learning strategies for security enhancement in wireless sensor … , 2020 2020 Citations: 58
Authentication & encryption based security services in blockchain technology T Varshney, N Sharma, I Kaushik, B Bhushan 2019 International Conference on Computing, Communication, and Intelligent … , 2019 2019 Citations: 57
Multi-attention DeepCRNN: an efficient and explainable intrusion detection framework for Internet of Medical Things environments: N. Sharma, PG Shambharkar N Sharma, PG Shambharkar Knowledge and Information Systems 67 (7), 5783-5849 , 2025 2025 Citations: 43
Black hole attack and its security measure in wireless sensors networks I Kaushik, N Sharma Handbook of wireless sensor networks: issues and challenges in current … , 2020 2020 Citations: 40
Taxonomy of attacks on web based applications A Singh, A Sharma, N Sharma, I Kaushik, B Bhushan 2019 2nd International Conference on Intelligent Computing, Instrumentation … , 2019 2019 Citations: 38
Transaction privacy preservations for blockchain technology B Bhushan, N Sharma International Conference on Innovative Computing and Communications … , 2020 2020 Citations: 37
Multi-layered security architecture for IoMT systems: integrating dynamic key management, decentralized storage, and dependable intrusion detection framework N Sharma, PG Shambharkar International Journal of Machine Learning and Cybernetics 16 (9), 6399-6446 , 2025 2025 Citations: 34
Comfy smart home using IoT S Jadon, A Choudhary, H Saini, U Dua, N Sharma, I Kaushik Proceedings of the International Conference on Innovative Computing … , 2020 2020 Citations: 34
Analysis of various machine learning algorithm for cardiac pulse prediction M Harjani, M Grover, N Sharma, I Kaushik 2019 International conference on computing, communication, and intelligent … , 2019 2019 Citations: 34
Attacks and security measures in wireless sensor network N Sharma, I Kaushik, VK Agarwal, B Bhushan, A Khamparia Intelligent Data Analytics for Terror Threat Prediction: Architectures … , 2021 2021 Citations: 33
IoE: A boon & threat to the mankind A Rustagi, C Manchanda, N Sharma 2020 IEEE 9th International Conference on Communication Systems and Network … , 2020 2020 Citations: 30
Privacy issues & security techniques in big data A Tiwari, N Sharma, I Kaushik, R Tiwari 2019 International Conference on Computing, Communication, and Intelligent … , 2019 2019 Citations: 30
Security countermeasures in web based application A Sharma, A Singh, N Sharma, I Kaushik, B Bhushan 2019 2nd International Conference on Intelligent Computing, Instrumentation … , 2019 2019 Citations: 30
Blockchain as a solution for security attacks in named data networking of things S Goyal, N Sharma, I Kaushik, B Bhushan Security and privacy issues in IoT devices and sensor networks, 211-243 , 2021 2021 Citations: 29
RESEARCH OUTPUTS (PATENTS, SOFTWARE, PUBLICATIONS, PRODUCTS)
1. Prediction Analysis Techniques of Data Mining: A Review. SSRN Electronic Journal. doi: 10.2139/
2. Privacy Issues & Security Techniques in Big Data. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
3. Evolution of IoT & Data Analytics using Deep Learning. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
4. Authentication & Encryption Based Security Services in Blockchain Technology. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
5. Architectural Model of Security Threats & their Countermeasures in IoT. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
6.Traffic Density Investigation & Road Accident Analysis in India using Deep Learning. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
7. Traffic control using V-2-V Based Method using Reinforcement Learning. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
8. Network Layers Threats & its Countermeasures in WSNs. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
9. Analysis of Various Machine Learning Algorithm for Cardiac Pulse Prediction. 2019 International Conference on Computing, Communication, and Intelligent Systems (ICCCIS). doi: 10.1109/
10. Intrusion Detection and Security System for Blackhole Attack. 2019 2nd International Conference on Signal Processing and Communication (ICSPC). doi: 10.1109/
11. Performance Measurement Using Different Shortest Path Techniques in Wireless Sensor Network. 2019 2nd International Conference on Signal Processing and Communication (ICSPC). doi: 10.1109/
12. Black Hole Attack and Its Security Measure in Wireless Sensors Networks. Advances in Intelligent Systems and Computing Handbook of Wireless Sensor Networks: Issues and Challenges in Current Scenarios, 401–416. doi: 10.1007/978-3-030-40305-8_20
13. Security Countermeasures in Web Based Application. 2019 2nd International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT). doi: 10.1109/
14. Taxonomy of Attacks on Web Based Applications. 2019 2nd International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT). doi: 10.1109/
15. Comfy Smart Home using IoT. SSRN Electronic Journal. doi: 10.2139/
16. Evaluation of Accidental Death Records Using Hybrid Genetic Algorithm. SSRN Electronic Journal. doi: 10.2139/
17. Evolution of IoT to IIoT: Applications & Challenges. SSRN Electronic Journal. doi:10.2139/
18. Producing Energy Using Blind Man Stick. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/
19. Importunity & Evolution of IoT for 5G. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/
20. Neoteric Security and Privacy Sanctuary Technologies in Smart Cities. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/
21. IoE: A Boon & Threat to the Mankind. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/
22. Evolution of 5G Wireless Network in IoT. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/
23. Precedence & Issues of IoT based on Edge Computing. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/
24. Security Challenges & Controls in Cyber Physical System. 2020 IEEE 9th International Conference on Communication Systems and Network Technologies (CSNT). doi:10.1109/