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They do not, however they have software that will scan your code for calls to unpublished APIs so you have to keep your code in the safe zone...
 
I was wondering about this because it's twice now that someone has slipped in an app with a SOCKS proxy tethering easter egg. What else can you tell me about this process? It's so intriguing to me.
 
Apples automated test gets smarter over time.... They have not released the process they use, but former employees have been fairly open about the testing process.

I can also tell you if you break the rules and try to fool Apple, they will ban you from the store forever.... and revoke your developer credentials.
 
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