Why OT Cybersecurity Matters
In 2021, a hacker accessed a Florida water treatment plant and tried increasing chemical levels to dangerous concentrations. In 2017, NotPetya malware caused over 10 billion dollars damage to Maersk, Merck, and FedEx. As PLC and SCADA connect to internet via Industry 4.0, they become targets. OT cybersecurity is the most in-demand specialisation and almost nobody is trained in it.
IT vs OT Security
IT priority: confidentiality. OT priority: availability — machines must keep running. IT patching: regular updates. OT patching: risky, may crash machines. IT lifespan: 3-5 years. OT lifespan: 15-25 years with legacy systems everywhere.
Common Attack Vectors
Unsecured Modbus: zero built-in security, anyone on network reads PLC registers. Default passwords: many PLCs ship with admin/admin. USB devices: Stuxnet virus hit Iranian nuclear via USB. Phishing emails: employees click malicious links. Poorly configured remote access.
Basic Protection
Network segmentation: PLCs on separate network from office PCs. Change default passwords immediately. Encrypt communications with TLS. Disable unused ports and web servers. Regular backups of PLC programs. Physical security for control cabinets.
Is Modbus secure?
No. Basic Modbus has zero security. Never expose directly to internet. Use OPC UA for secure communication.
How do I start in OT cybersecurity?
Learn PLC/SCADA first, then Industry 4.0 including security fundamentals. ABC Trainings covers this path.
Learn at ABC CAD and IT Trainings
ABC CAD and IT Trainings offers comprehensive courses across five centres in Maharashtra — Osmanpura, CIDCO, Wagholi, Hadapsar, and Sangli. With 11 years of training excellence and over 2000 students trained, we provide hands-on, industry-relevant education using 100 percent free tools. Visit abctrainings.in or call to enrol today.
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