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industrial-arch-sales/README.md

Cyber-Physical Systems & OT Security Specialist

Operational Technology (OT) security practitioner focused on industrial control system (ICS) integrity, ISA/IEC 62443 compliance, and cyber-physical risk governance across Purdue Model layers L0–L3.

🎯 Primary Public Artifacts

All active technical evidence, field diagnostics, and lab-validated PoCs are consolidated in the primary portfolio repository:

🔗 OT Security — Field Diagnostics & Cybersecurity Portfolio

Repository Overview: Technical artifacts produced from hands-on work inside active automated industrial environments, documented under operator-level access constraints without prior tooling or administrative credentials.

🛠️ Portfolio Highlights

Project 01 — Computer Vision System Failure & PLC Bypass Diagnosis

  • Scope: Automotive robotic painting cell (6DOF Yaskawa arms, Siemens S7 / Beckhoff PLCs).
  • Core Technical Issue: Metrological 46.1% inaccuracy rate caused by optical viewport degradation (Mohs hardness conflict: $\text{Al}_2\text{O}_3$ abrasive vs. borosilicate glass) leading to an undocumented third-party PLC logic bypass (Dark Data state).
  • Governance Alignment: ISA/IEC 62443-3-3 (FR 3 System Integrity, FR 2 Use Control) and NIST SP 800-82r3.
  • Remediation: Chemo-mechanical Cerium Oxide ($\text{CeO}_2$) polishing SOP and PLC bypass purge, avoiding hardware replacement.

Project 02 — Black-Box Security Audit: Automated OT Cell

  • Scope: Black-box vulnerability mapping across Top Coat surface treatment sub-stations.
  • Core Technical Issue: 13 critical vulnerabilities mapped from operator-level privilege, including exposed physical I/O, EOL operating systems, HMI kiosk breakout, flat IT/OT topology, and open-loop PLC routines.
  • Lab Validation: Defense-in-Depth architecture with nftables transport-layer filtering (S7Comm port 102/tcp isolation) validated via Wireshark on Debian Linux.

⚡ Technical Core & Standards

  • Frameworks & Standards: ISA/IEC 62443 (-3-2, -3-3, -4-1, -4-2), NIST SP 800-82r3, Purdue Model, ONS RO-CB.BR.01
  • Hardware & Systems: Siemens SIMATIC S7-300/1500, Beckhoff TwinCAT, Yaskawa Robotics, Industrial HMIs, IDMZ Firewalls
  • Protocols & Analysis: S7Comm, PROFINET, Modbus TCP, IEC 60870-5-104, Wireshark, TShark, Scapy, Python 3, Debian Linux

Contact & Evidence Requests: Full technical dossiers (16-page reports, PCAP traces, and system log captures) are available upon request for verified professional contacts.

Popular repositories Loading

  1. industrial-arch-sales industrial-arch-sales Public

    Cyber-Physical Architecture & OT Security Field Portfolio | ISA/IEC 62443 | NIST SP 800-82

  2. ot-auditor-engine ot-auditor-engine Public

    Enterprise CLI utility to parse PLC tag exports (Siemens/Rockwell) and generate automated IEC 62443 & NIST OT cybersecurity compliance dossiers.

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  4. sxt-site sxt-site Public

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  5. ot-security-field-diagnostics ot-security-field-diagnostics Public

    Field diagnostics, cyber-physical audit reports, and technical evidence from active OT/ICS environments (ISA/IEC 62443 & NIST SP 800-82r3