Chapter 1: NITG Chain: A Scalable, Private and Permissioned Blockchain with Proof of Reputation Consensus Method.- Chapter 2: Safeguarding Geo-location for Social Media with Local Differential Privacy and l-diversity.- Chapter 3: Detection of False Data Injection Cyber Attack in Smart Grid by Convolutional Neural Network based Deep Learning Technique.- Chapter 4: Democratic After-Market for Domain Names.- Chapter 5: Defect analysis of Faulty regions in Photovoltaic Panels using Deep Learning method.- Chapter 6: Leveraging a honeypot router for discovering and characterizing attacks on routers.- Chapter 7: Multimodal Biometric Authentication using Watermarking Technique.