Reverse Osmosis System PLC Attacked
|Event Year:||2002||Reliability:||Likely But Unconfirmed|
|Industry Type:||Electronic Manufacturing|
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
Loss of the reverse osmosis water system for several hours, but no economic loss as there was sufficient backup water.
|Action Description:||PLC was moved to a firewall protected LAN|