ICS, SCADA and PLC protection with IEC 62443-aligned segmentation - without disrupting the plant floor.

In an office environment, the worst case is data loss. On a plant floor, it's a stopped production line, a damaged asset, or a safety incident. That difference is why operational technology security can't simply be IT security applied to industrial equipment, OT prioritises availability and physical safety over data confidentiality, runs on equipment with 15- to 30-year lifecycles, and often cannot be patched or rebooted on an IT team's schedule.
Vinca Cyber's OT security practice secures industrial environments on their own terms, bringing the same 360° Cyber Resilience approach we've applied since 2017 to manufacturing and critical infrastructure clients, without introducing controls that disrupt the processes they're meant to protect.
OT security protects the hardware and software that monitor and control physical processes, the systems running production lines, power distribution, water treatment and transport networks. ICS SCADA security is the subset dealing specifically with industrial control systems: SCADA platforms, PLCs, RTUs and DCS equipment that issue direct commands to physical machinery.
The defining challenge is IT/OT convergence: these environments were designed for isolated networks, and the air gap most of them once relied on has largely disappeared as plants added remote access, IIoT sensors and cloud-connected monitoring. Attackers now reach OT through the IT network, which is precisely the path segmentation is meant to close.

Passive discovery, segmentation and OT-aware monitoring designed around plant-floor constraints.
Passive identification of every device on the industrial network, including legacy equipment nobody has documentation for.
Zone and conduit design aligned to IEC 62443 and the Purdue Model, limiting how far an IT-side compromise can travel.
Behavioural detection tuned to industrial protocols such as Modbus, DNP3 and OPC UA, where standard IT tooling is effectively blind.
Practical remediation for systems that genuinely cannot be patched or taken offline.
Controlled vendor and engineer access to PLCs and HMIs, replacing shared credentials and always-on VPN tunnels.
Mapping controls to IEC 62443 and NIST SP 800-82 for audit and regulatory review.
Applying IT security practice directly to an OT environment tends to cause the outage it was meant to prevent. The differences are structural: OT prioritises availability and safety, where IT prioritises confidentiality; a scheduled reboot that's routine in IT can halt production in OT; active scanning that's harmless on a corporate network can crash a legacy PLC; and equipment lifecycles measured in decades mean unsupported operating systems are normal rather than exceptional. Effective operational technology security works around these constraints with passive discovery, segmentation and compensating controls, rather than insisting the plant floor behave like a data centre.

Passive asset inventory across the industrial network, safe for legacy equipment.
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