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SQL injection is one of vulnerabilities of web application and there is a risk of an unauthorized access if web application has this vulnerability. A lot of heuristic prevention and detection methods of SQL injection attacks have been developed, however, theoretical performance analysis is difficult about them. In this paper, an approximate maximum likelihood estimation of parameter of a stochastic...
Recently, attacks against web application, such as SQL injection and cross site scripting, tend to increase. The detection methods against web application attacks such as pattern recognition, parsing and listing methods (web application firewall) have been developed. However, the evasion techniques of web application attacks are developing still now. In this paper, we proposed a new detection algorithm...
Cross Site Scripting (XSS) is a kind of injection attack triggered by the malicious scripts on the web sites. If attackers successfully lead XSS, end users' web browsing session can be hijacked and their personal information is often stolen by attackers. One of main reasons for XSS is the vulnerabilities on the web applications. However, those vulnerabilities are often left to maintain continuous...
The sigmoid function has been widely used in the problem of the two value distinction. In this paper, we prepare a function which is similar to a sigmoid function, and show that our proposed model is valid to the SQL Injection attack detection than the method using a sigmoid function.
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