Ian Hagmann
11/6/2022
SCADA’s Role in Critical Infrastructure
Critical infrastructure and SCADA systems were not originally made with cybersecurity in mind. SCADA systems have to work properly and securely to mitigate risks associated with critical infrastructure.
Vulnerabilities in Critical Infrastructure
Critical infrastructure is critical by nature and therefore affects a lot when things don’t work properly. If one little part of a process doesn’t go right, kapoof. Critical infrastructure systems experience major problems when workers aren’t doing their jobs the right way, or at all. Think of Homer Simpson, how quickly would the world crumble if every worker was like him. Then there’s the problem of equipment breaking or not working properly. Getting more equipment, or getting it repaired, can take a lot of time and disrupt operation. Of course there’s also the potential for outside interference, be it a trespasser on site or virtually. Someone being where they aren’t supposed to be will cause major issues whether or not that’s the person’s intention. “Accidental and technological threats include such issues as transportation accidents and failures, infrastructure failures and hazardous material accidents” (Robles et al. 19).
How SCADA Mitigates Risks
SCADA systems aggregate and use data to better control an operation. They can include sensors to collect operating data and controllers to make necessary changes on the fly. They usually provide human machine interfaces to allow operators to remotely control the systems. Having computerized implementations of control systems makes it possible to better log what an operator does while on the job. SCADA systems’ data can show early signs of equipment near failure and allow more time to get replacements. Having a digital control system allows for physical equipment to be more closed off to human interference. As for virtual trespassers, SCADA systems are the reason that is a problem, but that also means there is only one place to look for virtual actors. They can have regular cybersecurity appliances and software to keep out unwanted guests and malware.
Conclusion
Critical infrastructure has many vulnerabilities and SCADA systems, when properly implemented, can help mitigate those risks. SCADA systems are necessary to the operation of most critical infrastructure today and security for them must be a priority. SCADA is just a tool that can be used properly, or improperly, and can lead to more opportunities for bad guys, but when used correctly can make critical infrastructure run smoothly.
References
Robles, R. J., Choi, M. K., Cho, E. S., Kim, S. S., Park, G., & Lee, J. (2008). Common threats and vulnerabilities of critical infrastructures. International journal of control and automation, 1(1), 17-22.