IoT Security
Industrial IoT
Operational technology, industrial control systems and their security.
- 8 notes
- 68 minutes of reading
- Operational technology versus IT: priorities, lifetimes and safetyWhat operational technology (OT) is, how its priorities, lifetimes and constraints differ from IT, and why security controls must be adapted rather than copied when protecting industrial systems. 7 min · Beginner
- The Purdue model and industrial network zonesThe levels of the Purdue reference model, the role of the IT/OT DMZ, how traffic should flow between levels, and how the model is adapted for modern Industrial IoT and cloud connections. 8 min · Intermediate
- SCADA, PLCs, DCS, HMIs and RTUs explainedWhat each main industrial control component does: PLCs, RTUs, DCS, SCADA, HMIs, historians and engineering workstations, how they work together, and where their security weaknesses lie. 8 min · Beginner
- Industrial protocols: Modbus, DNP3, OPC UA, PROFINET and their securityHow the main industrial communication protocols work, which ports they use, why many lack authentication and encryption, and how secure variants and network controls protect them. 9 min · Intermediate
- IEC 62443: zones, conduits and security levelsHow the IEC 62443 series structures industrial cyber security: its four document groups, the roles it defines, zones and conduits, security levels 1 to 4 and the seven foundational requirements. 10 min · Advanced
- Lessons from industrial cyber attacks: Stuxnet, Ukraine power grid and TRITONWhat happened in the best-known attacks on industrial systems, including Stuxnet, the Ukraine power grid attacks and TRITON, and the defensive lessons each one teaches. 9 min · Intermediate
- Monitoring OT networks safely: passive monitoring and asset discoveryHow to monitor industrial networks without disrupting them: SPAN ports and network TAPs, passive asset discovery, baselining, what to alert on, and how OT monitoring connects to the SOC. 9 min · Advanced
- Predictive maintenance and Industry 4.0 use casesHow predictive maintenance uses sensor data to spot failing machines early, which signals and models are used, other Industry 4.0 use cases, and how to connect it all without weakening plant security. 8 min · Intermediate