International Journal of Emerging Technology and Advanced Engineering (IJETAE)
Now-a-days, the use of internet has been increased so rapidly and on large scale which has increased the number of applications and complexity of data. In order to deal with this increase in application and data complexity, web services are designed as multitier services. In this paper, the authors present Dual Sentinel which is used to detect attacks in multitier web application. By monitoring both web and consequent database requests, they are capable of searching out attacks that an independent ID would not be able to. This approach can create normality models of isolated user sessions that include both the web front end and back end (File, Sql).