White Paper

Securing Control and Communications Systems in Rail Transit Environments
Part IIIa: Attack Modeling Security Analysis White Paper


This document contains recommendations for attack modeling analysis that may be specified in transit agency procurement documents to examine security aspects for new rail systems or major upgrades.

Document History
Document Number Version Publication Date Publication Related Information
APTA SS-CCS-WP-003-15 04/08/2015 Published Current


attack modeling, attack trees, communications based-train control (CBTC), control andcommunications security, cybersecurity, positive train control (PTC), radio, rail transit vehicle, signaling, supervisory control and data acquisition (SCADA), train control


This White Paper, part of a series of related documents (see Introduction), covers the APTA attack modeling procedure for transit agencies and their systems integrators and vendors, which may be specified by transit agencies in their procurement documents. This document should be used in conjunction
with Part I and Part II of this series.

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