Chapter 1. A systematic approach for analyzing log files based on string matching regular expressions.- Chapter 2. An efficient detection and prevention approach of unknown malicious attack: A novel honeypot approach.- Chapter 3. Analysis of Risk and Security within Fog Computing enabled e-Healthcare System in Uttarakhand.- Chapter 4. Android Malware Detection using Extreme Learning Machine optimized with Swarm Intelligence.- Chapter 5. Asymmetric Image Cryptosystem Based on Chaotic Zone Plate Phase Mask and Arnold Transform.- Chapter 6. Authentication of Digital Media using Reversible Watermarking.- Chapter 7. Automatic Test Case Generation and Fault Tolerant Framework Based on N Version and Recovery Block Mechanism.- Chapter 8. Chatbot to Map Medical Prognosis and Symptoms using Machine Learning.- Chapter 9. Cloud Security: The Future of Data Storage.- Chapter 10. Curbing Criminal Acts on Mobile Phone Network.- Chapter 11. Designing of Fuzzy logic-based Intrusion detection system (FIDS) for detection of Blckhole attack in AODV for MANETs.- Chapter 12. Detection of Phishing Websites Using Classification Algorithms.- Chapter 13. IoT Based Smart Security System for Agriculture Fields.- Chapter 14. Efficient Clustering of Transactional data for Privacy-Preserving Data Publishing.- Chapter 15. Passive Video Forgery Detection Techniques to Detect Copy Move Tampering through Feature Comparison and RANSAC.