What is a PLC, What is the RISK? Can you say Stuxnet?

Most people are not aware how much PLCs (Programmable Logic Controllers) control every aspect of our lives. http://www.bin95.com Even those who work on them, had scholastic training, do not realize the RISK they take to Man and Machine. Until they have had our PLC Training. (Well a little more aware now, since the SCADA virus Stuxnet) http://www.youtube.com/watch?v=V4qg10yfp-s For instructor based PLC Training, see https://www.youtube.com/watch?v=Bw-m9gT7Nh4