Securing client-side content: Flash files

I came across this little pickle about security and flash files. Basically since Flash is a wide open standard, anyone can easily grab your swf file and decompile it. Obfuscation works a little bit here, but a determined little bastard could eventually modify your source.

Of course someone could also just run your flash movie from their own server.

I came up with this little security table for some suggested guidelines in protecting our flash component.

Flash Security
Threat	Suggested response
File could be stolen and hosted on another server	Come up with an dynamic encrypted key system-- the malicous users would have to know the scheme to get the file to unlock -- this is not 100%
File could be hotlinked from another server	flash file will only allow paths from the same domain as the swf resides... this will ensure that no one will be able to hijack our swf and load their own XML file
File could be decompiled	Obfuscate the code

What worries me is that none of these are 100% safeguards. They will deter the average evil-doer, but anyone smart & determined enough could get steal our file and modify it.

Does anyone have any suggestions on improving what I have above?