SQL injection prevention system

Existing vulnerabilities of Web system threaten the regular work of information systems. The most common Web system vulnerability is SQL injection. There is known approaches to protect Web applications against SQL injection attacks in the article. To improve the Web software security it is developed defense mechanism that protects Web resources from SQL injection performing. To implement this software it is used PHP, JavaScript and formal language theory known as regular expression. As a result it is received a software tool which allows to protect Web software from SQL injection vulnerability. Developed software tool allows user to protect his own Web application from an attack with using SQL.