The recall has also intensified questions about all the computer control systems used in modern cars.

VOA: special.2010.02.05

Cooper and Conrad turned off the radar,radio, computer and even some environmental control systems.

VOA: special.2009.06.24

And they were very important to the environmental control systems in the spacecraft.

VOA: special.2009.06.24

Workers will also add energy efficient lights and improved building control systems.

VOA: special.2009.05.22

Their bombs did not explode. Analyst Jonathan Wood with the security firm Control Risks in London, says public transport systems are an attractive target.

VOA: standard.2010.04.01

"Someone could attack the industrial control systems that control all the valves, all the distribution systems, and are used to turn on and off various aspects involved with energy and the electrical power grid and oil and gas distribution networks,".

VOA: standard.2009.08.11