OT Remote Access & Vendor Security

One legacy VPN account with no second factor shut down half a coast's fuel. How many does your plant still have?Remote access is the front door to operational technology, and it is usually the least governed. Colonial Pipeline fell to a single forgotten VPN credential; a casino empire fell to a phone call to the help desk. Every convenience that lets a vendor reach the plant is a path that lets a compromised vendor reach the process. This manual closes that door.This manual gives you the blueprint to: - Build a secure-access reference architecture for OT- Deploy PAM, MFA, identity federation and just-in-time access- Control jump servers, device trust, session recording and secure file transfer- Onboard and monitor third parties, and revoke access fast- Run supplier-compromise response and a 90-day zero-trust transformationWho it's for: OT security architects, IAM and vendor-risk teams, and plant IT/OT managers.Every chapter opens on a real, dated, documented incident and closes with a one-line Boardroom Intelligence takeaway a director can act on. A full Source-Notes appendix lets every claim be checked."Close the door most attackers actually walk through."About the author Professor Kai London (CISSP, CISM) is an internationally recognised cybersecurity executive, board advisor and author with 25+ years defending banking, aviation, defence, government and critical national infrastructure.This single, exhaustively engineered reference is built to replace an entire shelf of vendor manuals and generic remote-access primers - every chapter, checklist, and jump-server hardening template is designed for immediate use by working OT security teams securing engineers, contractors, and OEMs, making it the highest-value, most complete investment a plant, utility, or security…