SWF Defender is a software that can protect ActionScripts inside the SWF. Support Flash CS4 and ActionScript 3. SWF Defender protects your ActionScript codes by obscuring them so decompilers cannot retrieve any useful code from protected SWF file. SWF Defender allows you to select the strings in your SWF file, encrypt them in the SWF file using a very secure encryption algorithm, and decrypt them when needed at runtime.