SQL Injection Insertion of SQL statements into application inputs to corrupt, exploit,or otherwise damage an application database. Most commonly done directly through web forms,but can be directed through URL hacking,request hacking using debugging tools,or using bots that emulate browsers and manipulate web requests. 99 SQL Injection  Insertion of SQL statements into application inputs to corrupt, exploit, or otherwise damage an application database.  Most commonly done directly through web forms, but can be directed through URL hacking, request hacking using debugging tools, or using bots that emulate browsers and manipulate web requests