ANSI/ISA-99/02/01
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Using Tofino to Control Stuxnet
November 2010
Stuxnet is a computer worm designed to target one or more industrial systems that use Siemens PLCs. However, it is aggressive on all networks and can negatively affect any control system.
Stuxnet spreads rapidly using Local Area Network communications and one of the most effective ways to prevent this type of distribution is to make use of zone-based defenses.
This Application Note describes how to divide the control network into security zones and how to use the Tofino Industrial Security Solution to prevent the spread of the Stuxnet worm.
Eric Byres
