and gas facilities. that means this hack could cause water tanks and gas pipes to overflow, and it could take down major infrastructure by infiltrating codes that makes it run. >> you could cripple an entire country through cyber means and attacking infrastructure. kennedy says if there is a conflict with syria, damascus could respond in cyber space. >> they have big allies that have decent capabilities out there, such as iran and russia, and they are definitely capable of launching a cyber capability towards us in the united states. >> the researchers took control of signals to change what an operator sees, to highlight the vulnerabilities they recently presented findings publicly. >> we can make it look to the operator that our process is actually lowering. >> hackers can do it because the unit is connected to the