Re: Foul

[der Mouse <mouse () rodents-montreal org>]

> Bottom line: If a digital control (SCADA, DCS, PLC, etc.) can be
> manipulated to cause a system failure, then the control system is
> badly designed and lacks the appropriate safety systems dictated by
> standard control system design practices.

Disagree.  There are too many cases where the difference between
"failure" and "correct operation" lies only in human-layer intent.

As a simple example, if it is possible to shut something down through
digital control (for maintenance, say), then it is possible to shut it
down maliciously as well.

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