Module 7 · OT Network Monitoring

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
Apr 27, 2026
1 min read
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Last updated: April 29, 2026

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Active scanning breaks OT — even an Nmap can crash a PLC. Passive monitoring is the norm.

Active scanning breaks OT — even an Nmap can crash a PLC. Passive monitoring is the norm.

Tools

  • Claroty CTD — top-tier; Indian energy sector adoption
  • Nozomi Networks — competitor
  • Dragos Platform — industrial-control-specific
  • Open source — Zeek with industrial parsers
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Module 6 · IoT Protocols — MQTT, CoAP, Modbus
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Module 1 · Beginner

IoT vs OT, the Purdue model, defender constraints, threat landscape, notable real-world OT incidents.

Apr 22, 2026 · 4 min read
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Module 2 · Intermediate

Hardware reconnaissance, UART/JTAG, firmware extraction with binwalk, BLE/Zigbee testing, cloud API audit.

Apr 22, 2026 · 5 min read
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Module 3 · Intermediate

Modbus, DNP3, OPC-UA, S7Comm, EtherNet/IP, BACnet — protocol attack surfaces and defenses.

Apr 22, 2026 · 5 min read