First real-world SCADA attack in US
mark at amplex.net
Mon Nov 21 15:46:03 CST 2011
On 11/21/11 4:38 PM, Charles Mills wrote:
> Having worked on plenty of industrial and other control systems I can
> safely say security on the systems is generally very poor. The
> vulnerabilities have existed for years but are just now getting
> attention. This is a problem that doesn't really need a bunch of
> new legislation. It's an education / resource issue. The existing
> methods that have been used for years with reasonable success in the
> IT industry can 'fix' this problem.
> Industrial Controls systems are normally only replaced when they
> are so old that parts can no longer be obtained. PC's started to
> be widely used as operator interfaces about the time Windows 95
> came out. A lot of those Win95 boxes are still running and have
> been connected to the network over the years.
> And... if you can destroy a pump by turning it off and on too
> often then somebody engineered the control and drive system
> incorrectly. Operators (and processes) do stupid things all the
> time. As the control systems engineer your supposed to deal with
> that so that things don't go boom.
> Mark Radabaugh
> mark at amplex.net <mailto:mark at amplex.net> 419.837.5015
> There are still industrial control machines out there running MS-DOS.
> As you said not replaced until you can't get parts anymore.
Oh yeah.... just not too many of those MS-DOS machines have TCP stacks :-)
I still get calls to work on machines I designed in 1999. It's a real
pain finding a computer that can run the programming software. A lot
of the software was written for 386 or slower machines and used timing
loops to control the RS-232 ports. Modern processors really screw that
mark at amplex.net 419.837.5015
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