These day, my lab's mail server was not good condition. The server had been freezed sometimes. Today, the server gone... The file system of the machine had been damaged. Fortunately, our important data were not erased. So, we had to recove…

I'v heard the keywords "XSS(Cross-Site Scripting)", "SQL injection", and "Session Hijack". But, I didn't know the details about that keywords. I learned how to attack a PHP-based web application from the web sites: PHP Security Guide. On t…