David Smith

Security Architect

David Smith is a security architect as Schneider Electric. He has 10 years of experience as a developer working on industrial controls systems focusing on network redundancy, high availability, and machine to machine communications. From troubleshooting customer installations to developing new protocols, David has as wide breadth of knowledge in the communications landscape in the OT landscape. Focusing on security for the past two years, he has been involved with preparing devices for IEC-62443 certification and the development and prototyping of secure OT protocols such as Modbus and EtherNet/IP.

My Sessions

Secure Modbus … Coming Sooner Than You Think

Stage 2

S4x17 had a detailed session on Secure Modbus. This session is a quick update on the progress of the Secure Modbus specification. A quick review of the goals and technical overview of the specification, the companies involved, and a review of an interoperability test event from April 2017. Lastly an update on when the Modbus […]


Securing ICS Protocols Debate: Wrap It In TLS or Purpose Built ICS Protocols

Main Stage

Many of the most popular ICS protocols are addressing their lack of encryption and authentication, including Modbus TCP, EtherNet/IP and a version of OPC UA, by wrapping the protocol in TLS. There are pro’s and con’s to this approach, and they will be debated on the stage. – Does adding security to legacy protocols make […]

Panel / Debate Protocols