Industrial control system networks continue to run on legacy communication protocols that were built for reliability and uptime, not authentication or data integrity. In many environments, malicious actors with access to the OT network can impersonate devices, issue unauthenticated commands, or modify messages in transit without detection. A new guidance document from the Cybersecurity and Infrastructure Security Agency (CISA) explains why secure versions of common industrial protocols remain underused, even though they have existed since … More → The post Why secure OT protocols still struggle to catch on appeared first on Help Net Security .