Finally, the achillesheel of SCADA systems is their long lifespan, which is often measured in decades. These systems are built to last, and unlike PCs, which are easy to replace, itís difficult and costly to replace even part of a SCADA infrastructure.
Recommendation: There is no easy fix for this. While designing new systems or expanding existing systems, consider the long life cycle and architect your infrastructure accordingly so that components are easily upgradable or replaceable.
If you are SCADA system owner or administrator, I would appreciate if you could email me your feedback on this blog post along with your experience managing them.
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