iPhone 4G prototype re-emerged through a site in Vietnam. IPhone 4G prototype complete with videos and photos are similar to the iPhone 4G prototype shown by Gizmodo last April.

Interesting for the iPhone 4G prototype examined why this could be leaking in Vietnam. Particularly for companies similar in size to Apple’s famous tight security and secrecy.

As proclaimed the New York Times, Apple has a strict policy to maintain confidentiality. Apple even took extreme measures to prevent information leaks. Apple employees who work in the room reportedly testing device must cover device that is being done using a black veil.

Apple employees also had to turn on the switch when the red warning screen prototype device cover is opened. Apple even had to spread disinformation to its own employees about Apple’s product plans. This is done to track down leakers Apple information.

So why the prototype is re-leaking iPhone 4G? For this case the answer is clear Gizmodo, an employee who is testing a prototype iPhone accidentally leave such devices at the bar. But for a prototype that emerged in Vietnam, Apple itself has not been confirmed.