Back in 1996, when the IEC Technical Committee 57 began work on an automation standard to replace the IEC 60870-5 set of standards, the group had the following high-level goals: Given these features, ...

In this article I will explain how ‘zones and conduits,’ a concept included in ISA/IEC 62443 standards (formerly ANSI/ISA-99 standards), can help create a secure environment. SCADA Security Challenges ...