Jason forwarded me this article reviewing SWF Encrypt, a $99 Flash SWF encryption tool that, so far, is able to defeat those SWF decompilers that can be used to rip off your code by reverse-engineering the bytecode (the SWF file) into readable source code. This is also useful for trying to find interesting tidbits like database server passwords, if you’ve happened to hardcode it into your SWF.