Malware: Fighting Malicious Code

Browser Scripts

Let your rapidity be that of the wind, your compactness that of the forest.

—Sun Tzu, The Art of War

Web developers often rely on scripts to spiff up the appearance of a site, such as enabling button roll-over effects, processing form elements, or tweaking the appearance of a page according to the user's browser settings. Code that implements this functionality is written in scripting languages such as JavaScript or its cousin, JScript, both of which are quite similar and are created according to ECMAScript specifications. Internet Explorer also supports the execution of scripts written in VBScript, an environment we already encountered when looking at Microsoft Office macros in Chapter 2. Throughout this chapter, whenever I use ...