Possible Aegis Battle System Own Goal!!!!

I have heard that the Chinese have been showing off their new BMDS (Ballistic Missile Defence System).

My understanding is the Chinese have set up a front company in the US that has been subcontracting to the DoD in relation to the Aegis Battle Management System and in the process of this stolen the new designs for this system.

Has anyone heard any more on this? I have searched the internet for details/news reports but haven’t come up with anything?