Factory Networks Are Getting a Security Overhaul — and Some Plants Are Finishing It in Weeks, Not Years

Manufacturers are adopting identity-based microsegmentation to cut downtime risk and stop lateral malware spread, as complexity fears stall older approaches.

Production floors have become connected environments, and that connectivity has opened a door that manufacturers can no longer leave ajar. To shield the systems that keep assembly lines running, a growing share of the industry is turning to identity-based microsegmentation.

The logic behind the shift is blunt: manufacturers can barely tolerate downtime. A single hour of lost production can cost large-volume producers millions and send ripples through global supply chains. Attackers know this, and they exploit that low tolerance for interruption to squeeze companies under pressure.

Why Segmentation Stalled for So Long

Even with the threat obvious, traditional segmentation rollouts in industrial networks have often crawled. A survey by security vendor Zero Networks points to the reason: half of security decision-makers in manufacturing — 50% — name implementation complexity as their top concern.

Fear of accidentally disrupting live operations through security changes has held many plants back from the IT and network architecture adjustments they need.

Identity-based microsegmentation is designed to sidestep that obstacle. It pairs agentless segmentation with network-level multi-factor authentication.

The result is tight control over communication paths and access — without running separate software agents on every individual industrial system. That shrinks the attack surface inside the internal network and makes it far harder for malware to spread laterally.

What It Looks Like on the Ground

Several industrial players show that these architectures can be stood up on tight schedules. Manufacturer Vermeer completed segmentation of its network in 30 days while keeping legitimate data traffic fully intact. At Mikron, a manufacturing and automation company, the network segmentation rollout was finished within a few weeks.

Atlantic Constructors recorded measurable gains after wrapping up its own measures. Following penetration tests, the company reported that not a single one of the tested machines could be compromised.

Beyond security alone, the company said it saw operational benefits too: network performance likely doubled, while reliability rose by 100%.

The examples suggest that structured separation of data flows can harden entire systems without sacrificing the continuity production demands.