Security is more than technology alone. Effective cybersecurity results from the combination of secure system architecture, appropriate risk assessment, physical protection, and the implementation of established security standards.

The AS-Interface Security Guide explains how AS-Interface fits into modern  security concepts and regulations for Industrial Automation and Control Systems (IACS).

The guide analyses the security capabilities of the AS-Interface protocol, identifies realistic threat scenarios, and provides practical recommendations for the secure deployment of AS-Interface installations. It also explains the protocol's inherent limitations regarding authentication, authorization, and encryption and describes how these aspects are addressed through system architecture and appropriate protective measures.

The primary security objectives for AS-Interface are maintaining system integrity and system availability, while minimizing cybersecurity risks through physical separation and secure installation practices.

AS-Interface Security Guide

The AS-Interface Security Guide has been developed by the AS-International Association to support:

• Device manufacturers
• Machine builders
• System integrators
• Plant operators

It provides practical guidance for designing, installing and operating secure AS-Interface systems in accordance with current industrial cybersecurity principles.

The current version of the AS-Interface Security Guide is available as a free download.

Download: AS-Interface Security Guide (PDF)