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Sedat Özdemir

Posts on scada

7 posts on scada. Notes from public sources and my own test lab.

Breaking the Factory Default: Why ‘Modern’ Security Solutions are Crashing OT Networks

Everyone is talking about IT/OT convergence, but shoving office-grade scanners into a factory network is a recipe for disaster. Here’s why your legacy PLCs hate your 'next-gen' security tools.

June 26, 2026·4 dk readicsindustrial-securityot-security

When the Valves Start Turning Themselves: The 'Air-Gap' Fairytale and Harsh Realities in Industrial Systems

Think your industrial network is truly isolated? Let's talk about the 'Air-Gap' myth, why Modbus is dangerously polite, and the cold reality of OT security from a Red Teamer's perspective.

June 8, 2026·4 dk readics-securityindustrial-hackingot-security

Not Vanilla Ice Cream, but Industrial Disaster: The Air-Gap Lie and the Defenseless World of PLCs

Think your industrial systems are safe just because they aren't on the internet? Think again. Let’s talk about the reality of OT security and how a simple Python script can wreak havoc on an unprotected PLC.

June 4, 2026·4 dk readicsindustrial-securityot-security

The Silent Killer in the Factory: The Cold Reality of the 'Force Coil' Command in OT Systems

Hacking a server in the IT world leads to data leaks; hacking a system in the OT world leads to physical disasters. Let's dive into the vulnerabilities of Modbus/TCP and why the air-gap myth is dangerous.

April 27, 2026·4 dk readindustrial-securitymodbusot-security

The Packet That Stops the PLC: Air-Gap Fairy Tales and Realities in the OT World

When you intercept a 'Function Code 05' request from an unauthorized IP on Wireshark, you realize within seconds that the physical valve or motor is no longer under your control. Welcome to the world of OT.

March 18, 2026·4 dk readindustrial-securitymodbusot-security

When Valves Turn by Themselves: Inside the Dark Corridors of Industrial Systems

A midnight emergency call, the illusion of a 'perfectly fine' SCADA dashboard while physical machines struggle, and the harsh reality that air-gapped systems are never as secure as we think.

February 23, 2026·4 dk readicsindustrialcybersecuritymodbus

Back to Factory Settings: A Day Among Rusty Pipes and Exposed PLCs

Think air-gapped networks are real? Think again. Let's dive into the world of OT hacking, where Modbus is king and "reboot" is a terrifying word.

February 13, 2026·5 dk readics-securitymodbusot-security