Discussion Topic in own words

Discussion - ICS Attacks  

Please review the following video:

Hacker uses TeamViewer To Poison Water Supply? (Links to an external site.) 

Discuss the following questions/topics:

1. What happened in the Water treatment plant?
2. What was used to "break" into the ICS/SCADA system?
3. What happened to avert a near disaster?
4. How long would it have taken to correct the problem?

Answer each questions separately with own words. ***** proper citation if required****