Field Notes
Riverman Tales: The Frozen Lifeline
Extreme-environment field networking lessons that anchor consequence-based decision making in uptime, recoverability, and operator reality.
Insights / Field Notes
River Risk Articles and Field Notes
River's writing on brownfield reality, IEC 62443, attack paths, resilience, and operational security failure modes. Start with featured pieces or move straight into the full archive.
Featured Reading
Frameworks
Our OT Cybersecurity Strategy Has a Physics Problem
Why OT security programs fail when the strategy ignores physical consequences, process constraints, and the realities of plant-floor operations.
IEC 62443
IEC 62443 Gets Security Levels Wrong, and Here's Why
A practical critique of how the framework is interpreted in the field and where implementation logic breaks down without operational context.
Jump into the archive by subject
Use the archive for full-text search. Use these links when you already know the subject area.
Frameworks
IEC 62443, segmentation, and implementation reality
Start here if you want the standards critique and the practical implementation arguments first.
Attack Paths
Convergence, cloud-to-OT exposure, and physical access failures
Use this path when you want to read how weak assumptions become operational attack surface.
Sectors
Sector-specific writing and field context
Use these sector views when you want operational context instead of abstract OT-security positioning.