# River Caudle — Riverman

> Twenty-year OT/ICS security practitioner from rural Alabama, now Houston-based. Designs and defends the control systems behind critical industrial infrastructure. Originator of the SHIP Framework™, SECURE Method™, RIVER Method™, STREAM Method™, Schema on Read vs Write™, and the OT Stability Doctrine. Builder of MarlinSpike, GlassMarlin, CloudMarlin, Conversational Factory, and the Industrial Independence Architecture.

Personal site at rivercaudle.com. Primary contact: river@riverman.io.

Voice and identity: writes and speaks as the "Riverman." Practice spans 40 of 50 US states, most of Canada, plus Southeast Asia, Central America, Australia, Europe, and Africa. Sectors: mining, oil and gas, manufacturing (process and discrete), food and bev, chem/pharma, nuclear, energy. IEC 62443 underpins everything. All frameworks released under the Riverman Fair License v2.0 — forever free to plant operators and industrial workers; commercial use requires licensing.

## Main pages

- [Main page (index)](https://rivercaudle.com/index.md): About, position (doctrine), practice, the full stack, writing, scope, contact.
- [Frameworks index](https://rivercaudle.com/frameworks/index.md): Hub for all the methodologies — SHIP, SECURE, RIVER, STREAM, Schema on Read, OT Stability, IIA.

## Frameworks (canonical methodologies)

- [SHIP Framework™](https://rivercaudle.com/ship/index.md): Industrial network design — Standardize, Harden, Isolate, Protect. Four steps. CPwE, EtherNet/IP, TSN, IDMZ, Zero Trust OT.
- [SECURE Method™](https://rivercaudle.com/secure-method/index.md): IEC 62443 simplified — Segment, Establish, Control, Update, Respond, Evaluate. Each step mapped to a section of IEC 62443.
- [RIVER Method™](https://rivercaudle.com/river/index.md): Layer-1-up troubleshooting — Reboot, Inspect, Verify, Examine, Replace. Physical first, because 80% of problems are physical.
- [STREAM Method™](https://rivercaudle.com/stream/index.md): Advanced cyclic troubleshooting — Scope, Test, Replicate, Execute, Assess, Mitigate. For intermittent, remote, and multi-system problems.
- [Schema on Read vs Write™](https://rivercaudle.com/schema-on-read/index.md): Training framework — adaptive analogical learning that builds on what skilled trades already know.
- [OT Stability Doctrine](https://rivercaudle.com/ot-stability/index.md): Change management — in OT, change is risk and stability is security. Firmware longevity as a feature.

## License

- [Riverman Fair License v2.0](https://rivercaudle.com/license/index.md): Forever free to plant operators and industrial workers; commercial use requires licensing through Riverman Enterprises, LLC.

## Concentrated content

- [llms-full.txt](https://rivercaudle.com/llms-full.txt): Everything above as one markdown document, ready to ingest in a single request.

## Affiliated properties

- [industrialindependence.org](https://industrialindependence.org/): Industrial Independence Architecture — the operational sovereignty doctrine. Founded by River.
- [conversationalfactory.com](https://conversationalfactory.com/): "A factory you can talk to." Read-only AI-to-OT platform; an implementation of the Industrial Independence Architecture.
- [grassmarlin.com](https://grassmarlin.com/): MarlinSpike — open-source successor to the NSA's GrassMarlin. Passive OT/ICS topology workbench.
- [glassmarlin.com](https://glassmarlin.com/): Desktop bundle of MarlinSpike.
- [cloudmarlin.com](https://cloudmarlin.com/): Hosted PCAP analysis built on MarlinSpike.

## Optional

- [LinkedIn / Riverman archive](https://www.linkedin.com/in/rivercaudle/recent-activity/articles/): 40+ essays, field notes, and CVE analyses.