Comment Re:attack (Score 5, Informative) 38
From another source it sounds like the plant's SCADA system was compromised and shut down/disabled, causing some plants to go offline.
The immediate consequence is they would lose remote control over the pumps, fans, and valves at these facilities and either default to some safe state or just shut down entirely. Someone would have to drive over and manually reset/control everything, which is exactly what they did. Addressed promptly enough most people would even notice something was wrong.
The long term consequences could be that they end up getting incorrect status information about the facility's operation, causing a longer disruption until complaints start coming in and they have to run around trying to figure out what's wrong. Loss of water pressure, distribution of untreated water, distribution of over treated water, depletion of reserves are all obvious problems a bad enough attack could cause. Physical damage to equipment is also not impossible, which would be the worst case scenario.... you're not fixing a broken well/system pump or AOP reactor in two or three hours, and it you lose a bunch of them at once you could be at reduced capacity for months.
=Smidge=