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Introduction to Safety Instrumented Systems (SISs)
Industrial control systems (ICSs) have become an increasingly pressing concern due to emerging cyber threats and the prevalence of legacy devices that lack the security to protect against modern threat vectors. Cyberattacks have struck assets of all sizes and verticals, bringing an end to the era of denial and myths about the security of industrial installations.
Safety instrumented systems (SISs) are considered the crown jewels and last layer of defense for many Critical Infrastructures (CIs) such as oil and gas, chemicals, power, manufacturing, and maritime to name a few.
For years, they have operated in isolation using technologies and protocols that were designed without security in mind ...
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