Exactly how much of the actual code is examined as part of Apple's app approval? What's to keep someone from creating a time-bomb app, that is benign until a c

Exactly how much of the actual code is examined as part of Apple's app approval? What's to keep someone from creating a time-bomb app, that is benign until a certain date or signal is received? A game app that keeps a centralized high-score list on a server somewhere could use that as a back-channel to send flags to enable some kind of malicious mode. In that case, Apple could remove stuff after the fact, but everyone who had already downloaded it would be affected. The only advantage is that Apple keeps developer documentation about who submitted which app, so the guilty parties are potentially traceable, but there's a chance even that could be social-engineered. The openness of the Android platform actually allows the marketplace to meet the demand for verified apps, the same way SSL certs are supposed to be (but the market for SSL cert signing is geared toward the server end, not the consumer end, and they keep screwing up the high verification certs by making people jump through stupid hoops when they want them).