The myth of the air-gapped plant is gone. For remote monitoring and maintenance, OT and IT networks have merged, and internet-facing HMIs, engineering interfaces and remote-access paths now sit one pivot away from a corporate breach. Our OT, ICS and SCADA penetration testing safely assesses that reality — from the IT/OT boundary down to PLCs, RTUs and HMIs — and shows exactly how far an attacker could reach before they touch a physical process.
We test the way a real intruder operates but with the caution an operating plant demands: passive where it must be, active only where it is safe, and always with agreed rules of engagement so production is never put at risk.
We anchor the engagement in the Purdue model, mapping zones and conduits and validating the segmentation that is supposed to keep the enterprise network away from the process network. We hunt exposed HMIs and engineering stations, default and shared credentials on controllers, weak or plaintext industrial protocols (Modbus, DNP3, S7, EtherNet/IP), insecure remote access, and the IT footholds that let an attacker pivot into OT in the first place. Where safe, we demonstrate impact against a lab or offline replica rather than live controllers.
Why it matters
OT devices were built for reliability and predictability, not for an adversary, and they cannot simply be patched on a workday without stopping the process. Meanwhile the attacks are no longer theoretical — Iran-linked actors have taken a power plant offline and disrupted water utilities, and the CyberAv3ngers reached PLCs through default passwords exposed to the internet. Under NIS2 many operators are now formally in scope, and a physical disruption is not a data leak you can quietly remediate — it is downtime, damaged equipment and potential safety impact.
What we test
- IT/OT segmentation & Purdue-zone validation
- Exposed HMI, SCADA & engineering-station review
- PLC/RTU configuration & default-credential testing
- Industrial protocol security (Modbus, DNP3, S7, EtherNet/IP)
- Remote-access & jump-host attack paths
- IT-to-OT pivot & lateral-movement assessment
Common vulnerabilities we uncover
- Flat or weakly segmented IT/OT networks
- Internet-exposed HMIs and engineering interfaces
- Default, shared or hardcoded controller credentials
- Unauthenticated / plaintext industrial protocols
- Insecure vendor and contractor remote access
- Legacy, unpatched PLC firmware and SCADA servers
How we run your engagement
- Kick-off & scoping. A short call to agree goals, in-scope assets and rules of engagement, so your ot / ics / scada penetration testing is safe, authorised and aimed at your real business risk.
- Mapping & discovery. Before touching anything we map the full attack surface in scope, so nothing exploitable slips through.
- Hands-on testing. Cyprus-based specialists exploit and chain weaknesses manually — the flaws scanners walk straight past — to show genuine impact.
- Reporting. Each issue is verified, CVSS-rated and documented with a step-by-step reproduction and a practical fix your team can apply.
- Free retest. Once you have remediated, we re-test at no extra cost to confirm the attack path is truly closed.
Tools & techniques
Our methodology is deliberately conservative: we begin with passive discovery and asset inventory on the OT network, then move to careful, authorised active testing only in safe zones. We validate IT/OT segmentation from the corporate side, test remote-access and jump-host paths, review controller and HMI configurations, and assess industrial protocols for authentication and integrity weaknesses.
Where demonstrating exploitation on live equipment would be unsafe, we prove the attack path up to the controller and validate the final step against a test rig, an offline device or the vendor's simulator — so you get real evidence without risking the process.
When you need this engagement
- You operate a plant, utility, factory or critical-infrastructure site
- You are in scope for NIS2 or a national CNI regulation
- You have connected OT to corporate IT or the cloud for remote monitoring
- You are onboarding a new OT vendor or remote-maintenance path
- You need to evidence OT cyber diligence to a regulator or insurer
What you receive
- OT asset & exposure inventory
- IT/OT segmentation and pivot-path findings
- Prioritised, safety-aware remediation roadmap
- IEC 62443 alignment gap view
- Executive briefing for OT and IT stakeholders
- Re-review of applied fixes
Your deliverables
When your ot / ics / scada penetration testing wraps up, you receive a clear, audit-ready report plus a walkthrough call with your team. Inside you will find:
- A concise executive summary that management and the board can act on
- Every technical finding with a reproducible, copy-paste proof of concept
- CVSS v3.1 ratings and plain-language business impact for each issue
- Practical, prioritised remediation your developers can implement straight away
- A free retest and updated finding status once fixes are in place
- A signed attestation letter for clients, auditors, GDPR, NIS2 and ISO 27001
Standards & frameworks
IEC 62443
NIST SP 800-82
CISA ICS guidance
NIS2 Directive
What you gain
By the end of your ot / ics / scada penetration testing, you will know exactly which weaknesses a real attacker could exploit, what it would cost your business, and the precise order in which to fix them — backed by evidence, not a scanner’s guesswork. Cyprus firms use our findings to close critical gaps, satisfy client and regulator security questionnaires, and demonstrate due diligence for GDPR and NIS2. With a free retest included, you also get documented proof the issues are resolved.
Working with us
Every ot / ics / scada penetration testing begins with a short, no-obligation scoping call to understand your goals, environment and constraints, followed by a fixed-price proposal. Most work is delivered remotely, and because we are based in Cyprus we work in your timezone with on-site visits across Limassol, Nicosia and island-wide where it helps. We keep you updated throughout and flag any critical finding immediately rather than waiting for the report. Everything is covered by a signed NDA and safe, non-disruptive testing that protects your production systems. You receive your report, a walkthrough and a complimentary retest once fixes land. Engagements are typically booked one to three weeks ahead, and urgent testing can often be arranged — just email hi@cypruspentest.com.
Why Cyprus businesses choose CyprusPentest
Your ot / ics / scada penetration testing is run by senior offensive-security specialists who test the way genuine attackers do — manually, creatively and focused on proving real impact. What sets us apart:
- Based in Cyprus — local, in your timezone, with on-site coverage across Limassol and Nicosia.
- Manual, exploit-led testing that chains vulnerabilities the way an attacker would, well beyond automated scanners.
- Reproducible proof for every finding, with copy-paste steps your team can independently verify.
- Compliance-ready reporting that supports GDPR, NIS2, ISO 27001 and CySEC expectations.
- A free retest so you have documented evidence your fixes actually hold.
- Fixed-price and responsive, with a named point of contact from scoping through to retest.
Explore related services
OT / ICS / SCADA Penetration Testing pairs well with our other Cyprus penetration testing services for fuller coverage. You may also want:
How much does OT / ICS / SCADA Penetration Testing cost?
Every ot / ics / scada penetration testing in Cyprus is scoped and priced individually, so you pay only for the coverage you need — with no hidden extras. After a short, no-obligation scoping call we send a fixed-price quote, usually within one business day, with clear deliverables, a firm timeline and a complimentary retest included. The price depends on the size and complexity of your environment, so you always know the cost up front before any work begins.
Get a fixed-price quote
Frequently asked questions
Will testing disrupt our production process?
No. Safety comes first: we work to agreed rules of engagement, stay passive in sensitive zones, and demonstrate the final exploitation step against a lab, offline device or vendor simulator rather than live controllers.
Do you need to touch our live PLCs?
Only where it is provably safe and authorised. Most impact is demonstrated up to the controller and validated off-line, so you get real evidence without process risk.
Does this help with NIS2 compliance?
Yes. Our findings and IEC 62443 alignment support the risk-management and testing obligations NIS2 places on operators, and we can feed directly into a compliance-readiness engagement.
Which industrial systems and vendors do you cover?
Common PLC, RTU, HMI and SCADA platforms and protocols including Modbus, DNP3, Siemens S7 and EtherNet/IP, across manufacturing, energy, water and building-automation environments.