Provides several ways to protect SWF files that can be used in any combination:

1. Good old "checking the url" protection
2. Loading external text file (url-encoded) from your server. Recommended for "smart" clients. Remember about crossdomain.xml file !
3. Expire by time (like trial version)
4. Bytecode. If you have some good bytecode() at hand that will (as you think) crash decompilers, place it in a frame in some clip in library and attach at runtime.

If the violation is detected, you can

1. Unload root leaving the screen blank
2. Show an alert message telling them ... something
3. Call your own action after checking the isViolated flag property (see below for example).