Eran Jacob from Otorio describes the research outlined in the Black Hat session "A Broken Chain: Discovering OPC UA Attack Surface and Exploiting the Supply Chain."
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Exploiting the Industry 4.0 Supply Chain
The OPC unified architecture is growing in popularity as a platform-independent industrial communications architecture for connecting industrial systems to IT and the cloud. However, a chain of customizations and complexities in OPC-UA implementations has generated vulnerabilities in the software supply chain.