Contents: Website Defacement Detection and Monitoring Methods; BugMiner: Mining the Hard-to-Reach Software Vulnerabilities through the Target-Oriented Hybrid Fuzzer; Classification of Bugs in Cloud Computing Applications Using Machine Learning Techniques; Detection of Web Cross-Site Scripting (XSS) Attacks; Design and Implementation of SFCI; Threat Hunting Architecture Using a Machine Learning Approach for Critical Infrastructures Protection; Esext3 for Reducing the Effect of Harboring Bug in File System; Cross Channel Scripting and Code Injection Attacks on Web and Cloud-Based Applications; RLXSS: Optimizing XSS Detection Model to Defend Against Adversarial Attacks Based on Reinforcement Learning; Enhancing Web Application Security through Automated Penetration Testing with Multiple Vulnerability Scanners