In the world of Industry 4.0, the traditional "air-gap" between Information Technology and Operational Technology is a relic of the past. As data flows from the factory floor to the cloud, identity has emerged as the primary risk factor across these connected environments.

"Attackers don’t approach environments in silos. They don’t see 'IT' or 'OT'—they see identity paths. Movement across environments is a matter of opportunity, not effort."

A Strategic Maturity Model for CISOs

Maturity in converged security is less about the tools you buy and more about the visibility you maintain. Focus on three key markers:

• Visibility: Discovering all identities, including service accounts and IIoT machine IDs.
• Context: Understanding which identities create real business risk for safety and availability.
• Accountability: Aligning IT and OT teams under a shared risk narrative.

5 Ways to Protect Critical Infrastructure

• Continuous Discovery: Identify every identity, from human users to hardcoded secrets in legacy controllers.
• Context-Based Prioritization: Focus on the credentials that bridge corporate IT and operational systems.
• Control Extension: Apply existing IT protections, like MFA, to remote OT access points.
• Privileged Access Management: Remove implicit trust; ensure all high-level access is intentional and time-bound.
• Behavioral Monitoring: Observe how identities are actually used to detect drift and unauthorized movement.