Remote Software Upgrade Causes Loss of Control & View

Event Year: 2006 Reliability: Confirmed
Country: United Kingdom
Industry Type: Transportation
Description:

ABB performed a remote, unplanned, and unannounced software upgrade to the Power Control Centre between 10am and 11am resulting in a 22 minute loss of control and view of all substations across the network.

Impact:

Loss of control and view of all substations across the network for 22 minutes.

Action Description: Decommissioned the undocumented ISDN line from the control centre.