OT: Traffic Light Control (was Re: First real-world SCADA attack in US)
Brett Frankenberger
rbf+nanog at panix.com
Thu Nov 24 01:59:31 UTC 2011
On Wed, Nov 23, 2011 at 05:45:08PM -0500, Jay Ashworth wrote:
>
> Yeah. But at least that's stuff you have a hope of managing. "Firmware
> underwent bit rot" is simply not visible -- unless there's, say, signature
> tracing through the main controller.
I can't speak to traffic light controllers directly, but at least some
vital logical controllers do check signatures of their firmware and
programming and will fail into a safe configuration if the
signatures don't validate.
-- Brett
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