The increasing convergence of IT and OT environments—from the control level to the cloud—is shifting the boundaries of traditional security concepts. Critical infrastructures in industrial environments are no longer isolated: remote access for maintenance, support, and supply chain partners has become standard, but it also increases the attack surface.

Open interfaces, outdated protocols, and lack of segmentation put production processes at risk, especially when they are not secured according to established reference architectures such as the Purdue Model or within clearly defined network zones. Attackers exploit poorly secured remote access, over-privileged accounts, and lack of visibility to cause production downtime, data loss, and security incidents.

In this 15-minute se ...