Reverse Osmosis System PLC Attacked
| Event Year: | 2002 | Reliability: | Likely But Unconfirmed |
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| Country: | United States | ||
| Industry Type: | Electronic Manufacturing | ||
| Description: | A PLC operating a reverse osmosis system for water purification in a semiconductor manufacturing plant was attacked and disabled by unknown Internet hackers. The PLC was improperly protected as it was connected to a LAN directly accessable to the Internet |
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| Impact: | Loss of the reverse osmosis water system for several hours, but no economic loss as there was sufficient backup water. |
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| Action Description: | PLC was moved to a firewall protected LAN | ||