@misc{42,
  author = {David Kuipers and Mark Fabro},
  title = {Control Systems Cyber Security:Defense in Depth Strategies},
  abstract = {This document provides guidance and direction for developing ‘defense-in-depth’ strategies for organizations that use control system networks while maintaining a multi-tier information architecture that requires:
x Maintenance of various field devices, telemetry collection, and/or industrial-level process systems
x Access to facilities via remote data link or modem
x Public facing services for customer or corporate operations
x A robust business environment that requires connections among the control system domain, the external Internet, and other peer organizations. },
  year = {2006},
  journal = {Office of Scientific and Technical Information (OSTI)},
  month = {2006-05-01},
  url = {https://www.osti.gov/biblio/911553},
  doi = {10.2172/911553},
}