OT Security Operations
Secure and monitor operational technology environments
Industrial environments cannot be tested like IT environments. A scan that is routine against a web server can halt a production line. We work passively first, build an accurate asset picture, and only then assess risk — with uptime treated as a hard constraint rather than a preference.
Scope
What the engagement covers
- Passive SCADA and ICS asset discovery
- Industrial protocol analysis including Modbus, DNP3, and OPC UA
- Network segmentation and Purdue model review
- IT/OT boundary and remote access assessment
- Continuous anomaly monitoring tuned to process behaviour
- IEC 62443 and NIS2 alignment support
Outcomes
Why teams choose this
Uptime respected
Discovery is passive by default; active testing happens only inside windows you approve.
Accurate inventory
Most OT incidents trace back to an asset nobody knew was connected in the first place.
Segmentation proven
We test whether your IT/OT boundary actually holds, rather than trusting the network diagram.
Framework aligned
Findings map to IEC 62443 zones and conduits, so reporting upward is straightforward.
Process
How we work
- 1Passive network capture and asset discovery
- 2Protocol and process behaviour baselining
- 3Segmentation and remote access review
- 4Vulnerability analysis against the asset inventory
- 5Monitoring deployment and alert tuning
- 6Incident response planning for process environments
Deliverables
What you receive
- Complete OT asset inventory with protocol and firmware detail
- Network segmentation diagram with tested boundary findings
- Risk register mapped to IEC 62443 zones and conduits
- Monitoring deployment with tuned, process-aware alerting
Questions
Frequently asked
Will assessment disrupt production?
Discovery is entirely passive and carries no process risk. Any active testing is scoped, scheduled, and approved with your operations team beforehand.
Do you work with legacy equipment?
Routinely. Much of a typical OT estate cannot be patched, so our recommendations centre on compensating controls: segmentation, monitoring, and access restriction.
Related
Other services
Web Application Penetration Testing
Manual, exploit-verified testing across the OWASP Top 10 and your own business logic.
SAST – Static Application Security Testing
Source-level analysis wired into your pipeline, so flaws never reach a release branch.
DAST – Dynamic Application Security Testing
Authenticated scanning against the running system, including multi-step flows and APIs.