SCADA (Supervisory Control and Data Acquisition) systems commonly manage industrial equipment, including PLCs (Programmable Logic Controllers). Historically, SCADA environments often lack encryption for management traffic due to legacy equipment and protocols. This makes SCADA the most likely environment where unencrypted PLC management traffic can be observed.
[Reference:, CompTIA Security+ SY0-701 Official Study Guide, Domain 3.2, “SCADA systems often transmit management traffic for PLCs without encryption, making them susceptible to interception.”, Exam Objectives 3.2: “Summarize security implications of embedded and specialized systems.”, , , , , , , , ]
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