Abstract
Cloud computing is undoubtedly considered one of the most discussed topics in recent times, both in the research and business sectors. Various schools of thought have attempted to provide a fitting definition from many aspects. This computing paradigm can be defined as a web-based computing model designed to allow both off-site storage and easy data and digital file sharing. The SQL injection, which is certainly one of the top ranking vulnerabilities in cloud systems, is addressed in this paper. Also, a novel three-tier system for detection and mitigation of SQLi attacks is proposed. The methodology is involved over dynamic, static and runtime prevention and detection mechanisms. Moreover, it removes malicious queries and ensures the system is prepared for an environment that is secure despite being focused on the database server only. For the three-tier architecture, the first approach involves detection and prevention that follows the client logic access and data server (three-tier) organization to access, process and exchange queries. Furthermore, it makes sure no vulnerable code is executed that might affect the hosted operating system either partially or entirely. Experimental evaluation schemes demonstrate the efficiency and superiority of the scheme compared with existing approaches.