Ok, that was nonsense what that "hacker" said.
It cannot be broken, the only way to remove the lock is to reset phone which removes all your data.
Then they cannot set it up again as they need your Apple ID, so with this in mind your data is safe, they cannot view it either on the phone itself or via a computer.
The lock can be broken, but there are only about 3 companies that can do this, they do not do it for consumers, and it is incredibly expensive. You may recall when the FBI needed the data from the iPhone and the one company that ended up being able to do it for them, it would not have been cheap as it requires a lot of expensive technology and time.
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