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OT and industrial network security

Do you know what is really on your OT network?

PLCs, SCADA servers, HMIs, shop-floor PCs: we map everything connected inside your plant and tell you what is exposed and where to start.

Talk to an OT engineer

A 45-minute call to understand how your network is built and what actually makes sense. No commitment.

By sending this request you accept our privacy policy. We only use your data to get back to you.

  • No production downtime: we read traffic, we never touch the PLCs
  • We call you back within one working day
  • You talk to an OT engineer, not a salesperson
What we look at

Four questions we answer.

These are the same questions every plant manager asks the first time. Industrial network security starts here, not with one more firewall.

01

Which machines are connected

We list every PLC, SCADA server, HMI, drive and shop-floor PC: make, model, software version. Including the ones nobody remembered installing.

  • PLCs, SCADA, HMIs and shop-floor PCs
  • Make, model and software version
02

Who talks to whom

We draw the real traffic on your network: which devices exchange data, which ones reach the internet, and where the office network and the production network touch without anyone knowing.

  • Real traffic across network zones
  • Where office and production touch
03

Where you are exposed

We match the devices we find against known flaws and tell you which ones actually matter for your plant. Ordered by urgency, not alphabetically.

  • Known flaws matched to your devices
  • Ranked by urgency, not alphabetically
04

What changes over time

A new device, a connection that was not there before, behaviour outside the usual pattern. If you want, after the first mapping we keep watching the network and tell you when something changes.

  • New devices and new connections
  • Behaviour outside the usual pattern
What we secure

From PLCs to the vendors who log in from outside.

PLCs and controllers

Siemens, Rockwell, Schneider, Omron and the rest. We see which software they run and which ones have known flaws, without probing them invasively.

SCADA, HMIs and historians

The servers that drive the line and the panels on the floor often run on old systems nobody can patch. We tell you how to protect them anyway.

Where IT and OT touch

The link between the office network and the production network is the road almost every attack takes. We find it, document it and tell you how to close it.

Vendor remote access

The machine builder logging in for remote support is an open door. We see who comes in, when, and how far they get.

Why now

Twenty years of service, zero defences.

A production line stays at work for twenty years. Machines installed when there was no internet on the shop floor are now connected, and often nobody knows how many there are or how. Attacks on manufacturing keep growing every year, and the way in is almost always a device nobody was watching.

10%
of global attacks hit Italy
+40%
yearly growth in attacks on OT plants
20 years
average life of an industrial plant
0
production stops during our mapping
How it works

Three steps, no plant shutdown.

We listen to network traffic without sending commands to your devices. Production keeps running exactly as before.

01
Day 1

A 45-minute call

You tell us how the plant is built and what worries you. We tell you straight away whether we can help and how. If it makes no sense, we say so.

No costNo commitment
02
Week 1

We listen to the network

We connect the probe passively: it reads traffic and writes nothing to the PLCs. No risk for production, no aggressive scanning.

Passive probeZero downtime
03
Weeks 2-4

We hand you the picture

Network map, issues ranked by urgency and an action plan. We walk through it together, on a call or on site.

Network mapAction plan
What you keep

Documents you actually use.

Everything we produce stays with you, even if you decide not to carry on with us.

01

OT network map

Every connected device, how it is connected and who it talks to. A document you can put on the table in a meeting.

  • Full device inventory
  • Traffic diagram across zones
02

The issues, in order

Not a three-hundred-page PDF. Only the flaws that matter for your plant, ranked by real urgency.

  • Risk-based priority
  • What to fix first
03

Action plan

What to do, in which order, on what timeline. Written so that people outside the technical team understand it too.

  • Concrete steps
  • Time and effort estimate
04

Audit evidence

The same work also serves compliance: device inventory and documented controls, ready to show.

  • Useful for NIS2
  • Useful for IEC 62443
See all regulations covered by MON5 →
A real case · multi-zone OT network

Mapped in
three weeks.
Zero stops.

A manufacturing plant with several network zones and machines from different vendors. From the first scan to the full topology, without ever stopping production.

3
weeks from scan to plan
0
production stops
100%
of the OT network mapped
NIS2
audit evidence ready
Frequently asked

The questions we always get.

No. The probe reads traffic passively: it sends no commands to the PLCs and runs no active scans. The plant keeps working while we watch.
First step

Do you know what is on your OT network?
Let's find out together.

A 45-minute call with an engineer. No commitment and no surprise quotes.

Request the call
MON5.EU

OT (Operational Technology) cybersecurity for manufacturing plants. Map, identify, monitor and protect your industrial network.

🇮🇹MON5 S.R.L. · Italy
Bologna · Via Paolo Nanni Costa 20
Faenza · Corso Aurelio Saffi 21
VAT IT02725300392
🇱🇺AARG S.à.r.l. · Luxembourg
49, Boulevard Royal
L-2449 Luxembourg
VAT LU35998569
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Coesione Italia 21-27 Emilia-Romagna · Co-funded by the European Union · Ministero delle Imprese · Regione Emilia-Romagna
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