Operational & Industrial Security

Who We Are

At Obventum Cyber Security, we specialize in protecting the unseen backbone of modern life — Operational Technology (OT) and Industrial Control Systems (ICS). Our work spans across Croatia, the Netherlands, and Slovenia, where we collaborate with both governmental organizations and private enterprises in critical sectors such as energy, water supply, transportation, telecommunications, and manufacturing.

Unlike traditional IT, industrial systems prioritize uptime and safety over patch cycles and rapid changes. This makes them a prime target for attackers — from nation-state adversaries seeking disruption to criminal groups aiming to extort through ransomware targeting OT networks. Our mission is to ensure these vital systems remain resilient against modern cyber threats without sacrificing operational stability.

Why Operational & Industrial Security Matters

Industrial infrastructures in Europe face a growing risk landscape. In recent years, incidents like ransomware crippling transport hubs in the Netherlands or attempted breaches of energy facilities in Croatia have highlighted just how vulnerable OT environments can be.

The reality:

• Legacy devices often lack basic security controls.
• Flat networks allow attackers to move from IT to OT with ease.
• Third-party integrations (vendors, contractors, maintenance teams) open hidden backdoors.
• Patch management gaps leave PLCs and SCADA systems exposed for months, even years.

Our services address these realities head-on.

Our Methodology

• ICS/SCADA Penetration Testing
  We perform controlled attack simulations against Programmable Logic Controllers (PLCs), SCADA servers, and Human Machine Interfaces (HMIs) to reveal weaknesses that could allow manipulation, downtime, or unsafe conditions.
• Resilience Assessments for OT Networks
  Using frameworks like MITRE ATT&CK for ICS and NIST 800-82, we map out potential attacker pathways from IT into OT and validate if existing defenses can contain threats.
• Industrial Red Team Operations
  Beyond testing devices, we simulate adversary tactics targeting suppliers, facility networks, and employee access points — exposing how real-world attackers would approach an operational environment.
• Segmentation & Monitoring Validation
  We assess whether OT networks are properly segmented from IT environments and test intrusion detection capabilities against custom-built OT exploits.

Client Impact Example

In one case, a Slovenian manufacturing company operating across multiple plants approached Obventum after an EU-mandated audit flagged risks in their OT systems.

Our assessment revealed:

• Remote vendor access without multi-factor authentication.
• Outdated PLC firmware that allowed remote code execution.
• Weak segmentation between IT email systems and production control networks.

We conducted a simulated ransomware attack targeting production lines. Within hours, we demonstrated how attackers could halt manufacturing operations across all facilities.

After presenting our findings, the client implemented segmented VLANs, stronger vendor access controls, and a rapid incident response playbook. A follow-up validation showed a 70% reduction in exploitable pathways — significantly lowering the risk of catastrophic downtime.

Strengthening Critical Infrastructure in Croatia, the Netherlands, and Slovenia

Our work with energy operators in Croatia, logistics hubs in the Netherlands, and manufacturers in Sloveniaunderscores a common truth: industrial security is no longer optional. Attackers see OT networks as high-value, low-visibility targets. By combining deep technical expertise with hands-on adversary simulation, we ensure organizations are not only compliant but truly resilient.

What Our Clients Say

“Obventum didn’t just test our industrial systems — they showed us how real attackers think. Their work gave us clarity, confidence, and a roadmap to secure the systems our business relies on every day.”

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