Your Web applications can be the most important and most vulnerable entry point into your 
organization, and, as such, ensuring adequate hacker protection in your Web applications can be critical. A Web application not only includes the code that creates your Web site, but also the architectural components necessary to make a Web site available and useful to the public – both of which can make a Web site vulnerable to attacks like SQL injection or cross site scripting (XSS). When considering hacker protection for your Web applications, you must account for all the components that work together to create a Web site, not just the visible face presented to the world at large.
In the past, the majority of security breaches occurred at the network layer of corporate systems, so most corporations focus hacker protection measures at the network layer. Today, however, hackers are using vulnerabilities like SQL injection and XSS to manipulate Web applications inside the corporate firewall, enabling them to access and sabotage corporate and customer data. Given even a tiny hole in a company’s Web application code, an experienced intruder armed with only a Web browser and a little determination can break into most commercial Web sites by exploiting common Web application vulnerabilities like SQL injection. While corporations rush to develop their security policies and implement even a basic security foundation with hacker protection at the network layer, the professional hacker continues to find new ways to attack.
Since the Web’s inception, there have been numerous applications written, and most people trust that these applications are built with hacker protection in mind. Unfortunately, software companies do not produce bug-free applications. Application code is both large and complex, and human error is part of the development process. As long as you have good developers creating the right applications, you assume they are strong and secure, without vulnerabilities like those used for SQL injection attacks. But it is important to remember that all applications are written with functionality and technical requirements in mind, not security or hacker protection. Hacker Protection from SQL Injection – SPI Dynamics
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