A hacker informed us that <a href="ch004/index.php" target=

"_blank">this</a> site suffers from an XSS-like type of  vulnerability. Unfortunately, he 

lost the notes he had written regarding  how exactly did he exploit the aforementioned 

vulnerability.<br /> Your objective is to make an alert box appear, bearing the message 

"<strong>XSS!</strong>". It should be noted, however, that this site has some protection 

against such attacks.